From 4cd008a925f3c7c0064d86a4cb4b06278e79e9e7 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Fri, 15 Jun 2007 13:19:07 +0100 Subject: [PATCH] pp_header(): work around possible memory corruption add_user_info() possibly adds way more than just the commit header line. In fact, it sometimes needs so much more space that there is a buffer overrun, leading to an ugly crash. For example, the date is printed in its own line, and usually takes up more space than the equivalent Unix epoch. So, for good measure, add 80 characters (a full line) to the allocated space, in addition to the header line length. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- commit.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/commit.c b/commit.c index 40c87a747..dbb28b593 100644 --- a/commit.c +++ b/commit.c @@ -997,7 +997,7 @@ static void pp_header(enum cmit_fmt fmt, len = linelen; if (fmt == CMIT_FMT_EMAIL) len = bound_rfc2047(linelen, encoding); - ALLOC_GROW(*buf_p, *ofs_p + len, *space_p); + ALLOC_GROW(*buf_p, *ofs_p + len + 80, *space_p); dst = *buf_p + *ofs_p; *ofs_p += add_user_info("Author", fmt, dst, line + 7, dmode, encoding); @@ -1008,7 +1008,7 @@ static void pp_header(enum cmit_fmt fmt, len = linelen; if (fmt == CMIT_FMT_EMAIL) len = bound_rfc2047(linelen, encoding); - ALLOC_GROW(*buf_p, *ofs_p + len, *space_p); + ALLOC_GROW(*buf_p, *ofs_p + len + 80, *space_p); dst = *buf_p + *ofs_p; *ofs_p += add_user_info("Commit", fmt, dst, line + 10, dmode, encoding); -- 2.26.2