From 10da030ab757c38a01507bf18e2484698000b791 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Carlo=20Marcelo=20Arenas=20Bel=C3=B3n?= Date: Wed, 16 Oct 2019 12:10:24 +0000 Subject: grep: avoid leak of chartables in PCRE2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 94da9193a6 ("grep: add support for PCRE v2", 2017-06-01) introduced a small memory leak visible with valgrind in t7813. Complete the creation of a PCRE2 specific variable that was missing from the original change and free the generated table just like it is done for PCRE1. Signed-off-by: Carlo Marcelo Arenas Belón Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano diff --git a/grep.c b/grep.c index 296edbb..9556d13 100644 --- a/grep.c +++ b/grep.c @@ -525,7 +525,6 @@ static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt PCRE2_UCHAR errbuf[256]; PCRE2_SIZE erroffset; int options = PCRE2_MULTILINE; - const uint8_t *character_tables = NULL; int jitret; int patinforet; size_t jitsizearg; @@ -539,9 +538,10 @@ static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt if (has_non_ascii(p->pattern)) { if (!pcre2_global_context) BUG("pcre2_global_context uninitialized"); - character_tables = pcre2_maketables(pcre2_global_context); + p->pcre2_tables = pcre2_maketables(pcre2_global_context); p->pcre2_compile_context = pcre2_compile_context_create(NULL); - pcre2_set_character_tables(p->pcre2_compile_context, character_tables); + pcre2_set_character_tables(p->pcre2_compile_context, + p->pcre2_tables); } options |= PCRE2_CASELESS; } @@ -645,6 +645,7 @@ static void free_pcre2_pattern(struct grep_pat *p) pcre2_match_data_free(p->pcre2_match_data); pcre2_jit_stack_free(p->pcre2_jit_stack); pcre2_match_context_free(p->pcre2_match_context); + free((void *)p->pcre2_tables); } #else /* !USE_LIBPCRE2 */ static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) diff --git a/grep.h b/grep.h index 526c2db..533165c 100644 --- a/grep.h +++ b/grep.h @@ -96,6 +96,7 @@ struct grep_pat { pcre2_compile_context *pcre2_compile_context; pcre2_match_context *pcre2_match_context; pcre2_jit_stack *pcre2_jit_stack; + const uint8_t *pcre2_tables; uint32_t pcre2_jit_on; kwset_t kws; unsigned fixed:1; -- cgit v0.10.2-6-g49f6