45 lines
1.7 KiB
Diff
45 lines
1.7 KiB
Diff
From 037a7a81a46898c61e780cd23feddbae73b87839 Mon Sep 17 00:00:00 2001
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From: zherczeg <zherczeg@6239d852-aaf2-0410-a92c-79f79f948069>
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Date: Thu, 28 Nov 2019 11:35:08 +0000
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Subject: [PATCH] Use PCRE2_MATCH_EMPTY flag to detect empty matches in JIT.
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@1190 6239d852-aaf2-0410-a92c-79f79f948069
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Petr Písař: Ported to 10.34.
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---
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src/pcre2_jit_compile.c | 4 ++--
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src/pcre2_jit_test.c | 1 +
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diff --git a/src/pcre2_jit_compile.c b/src/pcre2_jit_compile.c
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index f564127..1d64536 100644
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--- a/src/pcre2_jit_compile.c
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+++ b/src/pcre2_jit_compile.c
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@@ -13122,8 +13122,8 @@ common->read_only_data_head = NULL;
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common->fcc = tables + fcc_offset;
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common->lcc = (sljit_sw)(tables + lcc_offset);
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common->mode = mode;
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-common->might_be_empty = re->minlength == 0;
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-common->allow_empty_partial = (re->max_lookbehind > 0) || (re->flags & PCRE2_MATCH_EMPTY) != 0;
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+common->might_be_empty = (re->minlength == 0) || (re->flags & PCRE2_MATCH_EMPTY);
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+common->allow_empty_partial = (re->max_lookbehind > 0) || (re->flags & PCRE2_MATCH_EMPTY);
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common->nltype = NLTYPE_FIXED;
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switch(re->newline_convention)
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{
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diff --git a/src/pcre2_jit_test.c b/src/pcre2_jit_test.c
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index a9b3880..e0638ef 100644
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--- a/src/pcre2_jit_test.c
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+++ b/src/pcre2_jit_test.c
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@@ -638,6 +638,7 @@ static struct regression_test_case regression_test_cases[] = {
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{ MU, A, 0, 0, "(?=(?:x|ab(*ACCEPT)b))", "ab" },
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{ MU, A, 0, 0, "(?=(a(b(*ACCEPT)b)))a", "ab" },
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{ MU, A, PCRE2_NOTEMPTY, 0, "(?=a*(*ACCEPT))c", "c" },
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+ { MU, A, PCRE2_NOTEMPTY, 0 | F_NOMATCH, "(?=A)", "AB" },
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/* Conditional blocks. */
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{ MU, A, 0, 0, "(?(?=(a))a|b)+k", "ababbalbbadabak" },
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--
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2.21.0
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