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authorCarlo Marcelo Arenas Belón <carenas@gmail.com>2019-08-28 07:54:44 -0700
committerJunio C Hamano <gitster@pobox.com>2019-09-09 11:50:08 -0700
commitad7c543e3b0f80befd26f4115f8fec4285a018bf (patch)
treedec38a9cdfb93d1519241a6e1caddbe5b4911143 /grep.c
parent75b2f01a0f642b39b0f29b6218515df9b5eb798e (diff)
downloadgit-ad7c543e3b0f80befd26f4115f8fec4285a018bf.tar.gz
grep: skip UTF8 checks explicitly
18547aacf5 ("grep/pcre: support utf-8", 2016-06-25) that was released with git 2.10 added the PCRE_UTF8 flag to PCRE1 matching including a call to has_non_ascii() to try to avoid breakage if there was non-utf8 encoded content in the haystack. Usually PCRE is compiled with JIT support (even if is not the default), and therefore the codepath used includes calling pcre_jit_exec, which skips UTF-8 validation by design (which might result in crashes or hangs) but when JIT support wasn't compiled we use pcre_exec instead with the posibility that grep might be aborted if invalid UTF-8 is found in the haystack. PCRE1 provides a flag since Mar 5, 2007 that could be used to skip the checks explicitly so use that to make both codepaths equivalent (the flag is ignored by pcre1_jit_exec) this fix is only implemented for PCRE1 because PCRE2 is likely to have a better solution (without the risks) instead in the future Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'grep.c')
-rw-r--r--grep.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/grep.c b/grep.c
index f7c3a5803e..b651506f83 100644
--- a/grep.c
+++ b/grep.c
@@ -421,7 +421,7 @@ static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt)
static int pcre1match(struct grep_pat *p, const char *line, const char *eol,
regmatch_t *match, int eflags)
{
- int ovector[30], ret, flags = 0;
+ int ovector[30], ret, flags = PCRE_NO_UTF8_CHECK;
if (eflags & REG_NOTBOL)
flags |= PCRE_NOTBOL;