From 726c8ef5a5a129d8157d0043f60fe7195d2cdb77 Mon Sep 17 00:00:00 2001
From: Johannes Sixt <j.sixt@viscovery.net>
Date: Mon, 12 Nov 2007 11:09:05 +0100
Subject: [PATCH] Fix preprocessor logic that determines the availablity of
 strchrnul().

Apart from the error in the condition (&& should actually be ||), the
construct

    #if !defined(A) || !A

leads to a syntax error in the C preprocessor if A is indeed not defined.

Tested-by: David Symonds <dsymonds@gmail.com>
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 git-compat-util.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/git-compat-util.h b/git-compat-util.h
index 92d79673f..ede9408bb 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -183,7 +183,13 @@ void *gitmemmem(const void *haystack, size_t haystacklen,
                 const void *needle, size_t needlelen);
 #endif
 
-#if !defined(__GLIBC_PREREQ) && !__GLIBC_PREREQ(2, 1)
+#ifdef __GLIBC_PREREQ
+#if __GLIBC_PREREQ(2, 1)
+#define HAVE_STRCHRNUL
+#endif
+#endif
+
+#ifndef HAVE_STRCHRNUL
 #define strchrnul gitstrchrnul
 static inline char *gitstrchrnul(const char *s, int c)
 {
-- 
2.26.2