From 28604e0c07a3062664926465c294038a9dcdb82f Mon Sep 17 00:00:00 2001
From: Alexandre Rostovtsev <tetromino@gentoo.org>
Date: Sat, 3 Oct 2015 01:40:26 -0400
Subject: [PATCH] app-emulation/wine: works with gcc-5.2.0 with latest patchset

Instead of a simple version check, run the upstream test case to check
whether the installed gcc ebuild has the ms_abi bug or not.

Gentoo-Bug: 549768
Package-Manager: portage-2.2.22
---
 app-emulation/wine/files/pr66838.c       | 36 ++++++++++++++++++++++++
 app-emulation/wine/wine-1.6.2-r1.ebuild  | 18 ++++++++----
 app-emulation/wine/wine-1.6.2.ebuild     | 18 ++++++++----
 app-emulation/wine/wine-1.7.10-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.11-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.12-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.13-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.14-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.15-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.16-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.17-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.18-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.19-r2.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.20-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.21-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.22-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.28-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.29-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.3-r1.ebuild  | 18 ++++++++----
 app-emulation/wine/wine-1.7.33-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.34.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.35.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.36.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.37.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.38-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.39-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.4-r1.ebuild  | 18 ++++++++----
 app-emulation/wine/wine-1.7.40-r1.ebuild | 18 ++++++++----
 app-emulation/wine/wine-1.7.41.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.42.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.43.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.44.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.45.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.46.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.47.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.50.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.51.ebuild    | 18 ++++++++----
 app-emulation/wine/wine-1.7.8-r1.ebuild  | 18 ++++++++----
 app-emulation/wine/wine-1.7.9-r1.ebuild  | 18 ++++++++----
 app-emulation/wine/wine-9999.ebuild      | 18 ++++++++----
 40 files changed, 504 insertions(+), 234 deletions(-)
 create mode 100644 app-emulation/wine/files/pr66838.c

diff --git a/app-emulation/wine/files/pr66838.c b/app-emulation/wine/files/pr66838.c
new file mode 100644
index 000000000000..cd616859427a
--- /dev/null
+++ b/app-emulation/wine/files/pr66838.c
@@ -0,0 +1,36 @@
+/* From gcc svn, /branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr66838.c */
+/* Copyrighted and distributed under the same terms as gcc */
+
+void abort (void);
+
+char global;
+
+__attribute__((sysv_abi, noinline, noclone))
+void sysv_abi_func(char const *desc, void *local)
+{
+  register int esi asm ("esi");
+  register int edi asm ("edi");
+  
+  if (local != &global)
+    abort ();
+
+  /* Clobber some of the extra SYSV ABI registers.  */
+  asm volatile ("movl\t%2, %0\n\tmovl\t%2, %1"
+		: "=r" (esi), "=r" (edi)
+		: "i" (0xdeadbeef));
+}
+
+__attribute__((ms_abi, noinline, noclone))
+void ms_abi_func ()
+{
+  sysv_abi_func ("1st call", &global);
+  sysv_abi_func ("2nd call", &global);
+  sysv_abi_func ("3rd call", &global);
+}
+
+int
+main(void)
+{
+  ms_abi_func();
+  return 0;
+}
diff --git a/app-emulation/wine/wine-1.6.2-r1.ebuild b/app-emulation/wine/wine-1.6.2-r1.ebuild
index cd806c0684a2..7890da716df5 100644
--- a/app-emulation/wine/wine-1.6.2-r1.ebuild
+++ b/app-emulation/wine/wine-1.6.2-r1.ebuild
@@ -145,12 +145,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.6.2.ebuild b/app-emulation/wine/wine-1.6.2.ebuild
index 3b620b1f9fd5..e990228e1af3 100644
--- a/app-emulation/wine/wine-1.6.2.ebuild
+++ b/app-emulation/wine/wine-1.6.2.ebuild
@@ -174,12 +174,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.10-r1.ebuild b/app-emulation/wine/wine-1.7.10-r1.ebuild
index 8dd499670d14..9cd19bdcba2c 100644
--- a/app-emulation/wine/wine-1.7.10-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.10-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.11-r1.ebuild b/app-emulation/wine/wine-1.7.11-r1.ebuild
index 8dd499670d14..9cd19bdcba2c 100644
--- a/app-emulation/wine/wine-1.7.11-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.11-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.12-r1.ebuild b/app-emulation/wine/wine-1.7.12-r1.ebuild
index a672bc81acc3..16697c5c4b24 100644
--- a/app-emulation/wine/wine-1.7.12-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.12-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.13-r1.ebuild b/app-emulation/wine/wine-1.7.13-r1.ebuild
index a672bc81acc3..16697c5c4b24 100644
--- a/app-emulation/wine/wine-1.7.13-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.13-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.14-r1.ebuild b/app-emulation/wine/wine-1.7.14-r1.ebuild
index a672bc81acc3..16697c5c4b24 100644
--- a/app-emulation/wine/wine-1.7.14-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.14-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.15-r1.ebuild b/app-emulation/wine/wine-1.7.15-r1.ebuild
index a672bc81acc3..16697c5c4b24 100644
--- a/app-emulation/wine/wine-1.7.15-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.15-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.16-r1.ebuild b/app-emulation/wine/wine-1.7.16-r1.ebuild
index a672bc81acc3..16697c5c4b24 100644
--- a/app-emulation/wine/wine-1.7.16-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.16-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.17-r1.ebuild b/app-emulation/wine/wine-1.7.17-r1.ebuild
index a672bc81acc3..16697c5c4b24 100644
--- a/app-emulation/wine/wine-1.7.17-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.17-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.18-r1.ebuild b/app-emulation/wine/wine-1.7.18-r1.ebuild
index a672bc81acc3..16697c5c4b24 100644
--- a/app-emulation/wine/wine-1.7.18-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.18-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.19-r2.ebuild b/app-emulation/wine/wine-1.7.19-r2.ebuild
index 0569dd93ff56..90fb71037732 100644
--- a/app-emulation/wine/wine-1.7.19-r2.ebuild
+++ b/app-emulation/wine/wine-1.7.19-r2.ebuild
@@ -159,12 +159,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.20-r1.ebuild b/app-emulation/wine/wine-1.7.20-r1.ebuild
index baa882c1ee6d..39a57ab49f68 100644
--- a/app-emulation/wine/wine-1.7.20-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.20-r1.ebuild
@@ -161,12 +161,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.21-r1.ebuild b/app-emulation/wine/wine-1.7.21-r1.ebuild
index 73436402e63e..3e8845408490 100644
--- a/app-emulation/wine/wine-1.7.21-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.21-r1.ebuild
@@ -161,12 +161,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.22-r1.ebuild b/app-emulation/wine/wine-1.7.22-r1.ebuild
index 73436402e63e..3e8845408490 100644
--- a/app-emulation/wine/wine-1.7.22-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.22-r1.ebuild
@@ -161,12 +161,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.28-r1.ebuild b/app-emulation/wine/wine-1.7.28-r1.ebuild
index 54d6481fa299..9963e5bc2db8 100644
--- a/app-emulation/wine/wine-1.7.28-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.28-r1.ebuild
@@ -161,12 +161,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.29-r1.ebuild b/app-emulation/wine/wine-1.7.29-r1.ebuild
index 54d6481fa299..9963e5bc2db8 100644
--- a/app-emulation/wine/wine-1.7.29-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.29-r1.ebuild
@@ -161,12 +161,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.3-r1.ebuild b/app-emulation/wine/wine-1.7.3-r1.ebuild
index 8ac9a7d468a6..aecbaf3b75f9 100644
--- a/app-emulation/wine/wine-1.7.3-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.3-r1.ebuild
@@ -145,12 +145,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.33-r1.ebuild b/app-emulation/wine/wine-1.7.33-r1.ebuild
index f6af72780f4e..f38cb492923e 100644
--- a/app-emulation/wine/wine-1.7.33-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.33-r1.ebuild
@@ -163,12 +163,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.34.ebuild b/app-emulation/wine/wine-1.7.34.ebuild
index 91fbdfa04522..09684950e5a9 100644
--- a/app-emulation/wine/wine-1.7.34.ebuild
+++ b/app-emulation/wine/wine-1.7.34.ebuild
@@ -163,12 +163,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.35.ebuild b/app-emulation/wine/wine-1.7.35.ebuild
index 137912ea262d..8f493b046b74 100644
--- a/app-emulation/wine/wine-1.7.35.ebuild
+++ b/app-emulation/wine/wine-1.7.35.ebuild
@@ -163,12 +163,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.36.ebuild b/app-emulation/wine/wine-1.7.36.ebuild
index 9c7bba65d427..3d79ebd04cc3 100644
--- a/app-emulation/wine/wine-1.7.36.ebuild
+++ b/app-emulation/wine/wine-1.7.36.ebuild
@@ -162,12 +162,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.37.ebuild b/app-emulation/wine/wine-1.7.37.ebuild
index 2e2c0d0c085f..a5371660e6b8 100644
--- a/app-emulation/wine/wine-1.7.37.ebuild
+++ b/app-emulation/wine/wine-1.7.37.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.38-r1.ebuild b/app-emulation/wine/wine-1.7.38-r1.ebuild
index 1ba468d05a3e..e8bff6566795 100644
--- a/app-emulation/wine/wine-1.7.38-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.38-r1.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.39-r1.ebuild b/app-emulation/wine/wine-1.7.39-r1.ebuild
index 6fd525b4068b..cba75014d06b 100644
--- a/app-emulation/wine/wine-1.7.39-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.39-r1.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.4-r1.ebuild b/app-emulation/wine/wine-1.7.4-r1.ebuild
index 5ca4da7e4ddc..e157195ba651 100644
--- a/app-emulation/wine/wine-1.7.4-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.4-r1.ebuild
@@ -145,12 +145,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.40-r1.ebuild b/app-emulation/wine/wine-1.7.40-r1.ebuild
index 6fd525b4068b..cba75014d06b 100644
--- a/app-emulation/wine/wine-1.7.40-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.40-r1.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.41.ebuild b/app-emulation/wine/wine-1.7.41.ebuild
index 6fd525b4068b..cba75014d06b 100644
--- a/app-emulation/wine/wine-1.7.41.ebuild
+++ b/app-emulation/wine/wine-1.7.41.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.42.ebuild b/app-emulation/wine/wine-1.7.42.ebuild
index 6fd525b4068b..cba75014d06b 100644
--- a/app-emulation/wine/wine-1.7.42.ebuild
+++ b/app-emulation/wine/wine-1.7.42.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.43.ebuild b/app-emulation/wine/wine-1.7.43.ebuild
index 6fd525b4068b..cba75014d06b 100644
--- a/app-emulation/wine/wine-1.7.43.ebuild
+++ b/app-emulation/wine/wine-1.7.43.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.44.ebuild b/app-emulation/wine/wine-1.7.44.ebuild
index 6fd525b4068b..cba75014d06b 100644
--- a/app-emulation/wine/wine-1.7.44.ebuild
+++ b/app-emulation/wine/wine-1.7.44.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.45.ebuild b/app-emulation/wine/wine-1.7.45.ebuild
index 8930da943b27..555a7d1773b4 100644
--- a/app-emulation/wine/wine-1.7.45.ebuild
+++ b/app-emulation/wine/wine-1.7.45.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.46.ebuild b/app-emulation/wine/wine-1.7.46.ebuild
index 6fd525b4068b..cba75014d06b 100644
--- a/app-emulation/wine/wine-1.7.46.ebuild
+++ b/app-emulation/wine/wine-1.7.46.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.47.ebuild b/app-emulation/wine/wine-1.7.47.ebuild
index 6b89273a5b79..4f5cc8e30178 100644
--- a/app-emulation/wine/wine-1.7.47.ebuild
+++ b/app-emulation/wine/wine-1.7.47.ebuild
@@ -165,12 +165,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.50.ebuild b/app-emulation/wine/wine-1.7.50.ebuild
index d78c249d5b5e..8a8d5c1cfe01 100644
--- a/app-emulation/wine/wine-1.7.50.ebuild
+++ b/app-emulation/wine/wine-1.7.50.ebuild
@@ -166,12 +166,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.51.ebuild b/app-emulation/wine/wine-1.7.51.ebuild
index d78c249d5b5e..8a8d5c1cfe01 100644
--- a/app-emulation/wine/wine-1.7.51.ebuild
+++ b/app-emulation/wine/wine-1.7.51.ebuild
@@ -166,12 +166,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.8-r1.ebuild b/app-emulation/wine/wine-1.7.8-r1.ebuild
index 501513787d76..090fb1c204bd 100644
--- a/app-emulation/wine/wine-1.7.8-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.8-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-1.7.9-r1.ebuild b/app-emulation/wine/wine-1.7.9-r1.ebuild
index 501513787d76..090fb1c204bd 100644
--- a/app-emulation/wine/wine-1.7.9-r1.ebuild
+++ b/app-emulation/wine/wine-1.7.9-r1.ebuild
@@ -146,12 +146,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
diff --git a/app-emulation/wine/wine-9999.ebuild b/app-emulation/wine/wine-9999.ebuild
index d78c249d5b5e..8a8d5c1cfe01 100644
--- a/app-emulation/wine/wine-9999.ebuild
+++ b/app-emulation/wine/wine-9999.ebuild
@@ -166,12 +166,18 @@ wine_build_environment_check() {
 	[[ ${MERGE_TYPE} = "binary" ]] && return 0
 
 	# bug #549768
-	if use abi_x86_64 && [[ $(gcc-major-version) = 5 ]]; then
-		eerror "64-bit wine cannot be built with gcc-5.1 or 5.2 due to compiler bugs;"
-		eerror "you may use gcc-config to select an older compiler version."
-		eerror "See https://bugs.gentoo.org/549768"
-		eerror
-		return 1
+	if use abi_x86_64 && [[ $(gcc-major-version) = 5 && $(gcc-minor-version) -le 2 ]]; then
+		einfo "Checking for gcc-5 ms_abi compiler bug ..."
+		$(tc-getCC) -O2 "${FILESDIR}"/pr66838.c -o "${T}"/pr66838 || die
+		# Run in subshell to prevent "Aborted" message
+		if ! ( "${T}"/pr66838 || false ) >/dev/null 2>&1; then
+			eerror "64-bit wine cannot be built with gcc-5.1 or initial patchset of 5.2.0"
+			eerror "due to compiler bugs; please re-emerge the latest gcc-5.2.x ebuild,"
+			eerror "or use gcc-config to select a different compiler version."
+			eerror "See https://bugs.gentoo.org/549768"
+			eerror
+			return 1
+		fi
 	fi
 
 	if use abi_x86_64 && [[ $(( $(gcc-major-version) * 100 + $(gcc-minor-version) )) -lt 404 ]]; then
-- 
2.26.2