Fix issue in the backtracking optimization of character in JIT
Resolves: RHEL-9938
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pcre2-10.40-Fix-JIT-regression-in-PHP.patch
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60
pcre2-10.40-Fix-JIT-regression-in-PHP.patch
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From 44a4e60e0ad45d4c60b7da10e9e9531da75bb9a4 Mon Sep 17 00:00:00 2001
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From: Zoltan Herczeg <hzmester@freemail.hu>
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Date: Tue, 12 Jul 2022 08:35:38 +0000
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Subject: [PATCH] Fixed an issue in the backtracking optimization of character
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repeats in JIT
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---
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src/pcre2_jit_compile.c | 20 ++++++++++----------
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src/pcre2_jit_test.c | 1 +
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3 files changed, 14 insertions(+), 10 deletions(-)
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diff --git a/src/pcre2_jit_compile.c b/src/pcre2_jit_compile.c
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index e638c24..b3cffbe 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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@@ -11517,19 +11517,19 @@ if (exact > 1)
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}
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}
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else if (exact == 1)
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- {
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compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, TRUE);
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- if (early_fail_type == type_fail_range)
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- {
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- OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), early_fail_ptr);
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- OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), early_fail_ptr + (int)sizeof(sljit_sw));
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- OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, TMP2, 0);
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- OP2(SLJIT_SUB, TMP2, 0, STR_PTR, 0, TMP2, 0);
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- add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_LESS_EQUAL, TMP2, 0, TMP1, 0));
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+if (early_fail_type == type_fail_range)
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+ {
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+ /* Range end first, followed by range start. */
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+ OP1(SLJIT_MOV, TMP1, 0, SLJIT_MEM1(SLJIT_SP), early_fail_ptr);
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+ OP1(SLJIT_MOV, TMP2, 0, SLJIT_MEM1(SLJIT_SP), early_fail_ptr + (int)sizeof(sljit_sw));
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+ OP2(SLJIT_SUB, TMP1, 0, TMP1, 0, TMP2, 0);
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+ OP2(SLJIT_SUB, TMP2, 0, STR_PTR, 0, TMP2, 0);
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+ add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_LESS_EQUAL, TMP2, 0, TMP1, 0));
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- OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), early_fail_ptr + (int)sizeof(sljit_sw), STR_PTR, 0);
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- }
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+ OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), early_fail_ptr, STR_PTR, 0);
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+ OP1(SLJIT_MOV, SLJIT_MEM1(SLJIT_SP), early_fail_ptr + (int)sizeof(sljit_sw), STR_PTR, 0);
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}
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switch(opcode)
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diff --git a/src/pcre2_jit_test.c b/src/pcre2_jit_test.c
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index bb141a0..81c9582 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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@@ -354,6 +354,7 @@ static struct regression_test_case regression_test_cases[] = {
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{ MU, A, 0, 0, "_[ab]+_*a", "_aa" },
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{ MU, A, 0, 0, "#(A+)#\\d+", "#A#A#0" },
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{ MU, A, 0, 0, "(?P<size>\\d+)m|M", "4M" },
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+ { M, PCRE2_NEWLINE_CRLF, 0, 0, "\\n?.+#", "\n,\n,#" },
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/* Bracket repeats with limit. */
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{ MU, A, 0, 0, "(?:(ab){2}){5}M", "abababababababababababM" },
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--
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2.41.0
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@ -9,7 +9,7 @@
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#%%global rcversion RC1
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Name: pcre2
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Version: 10.40
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Release: %{?rcversion:0.}2%{?rcversion:.%rcversion}%{?dist}
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Release: %{?rcversion:0.}3%{?rcversion:.%rcversion}%{?dist}
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%global myversion %{version}%{?rcversion:-%rcversion}
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Summary: Perl-compatible regular expression library
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# the library: BSD with exceptions
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@ -51,6 +51,8 @@ Source1: https://ftp.pcre.org/pub/pcre/%{?rcversion:Testing/}%{name}-%{myvers
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Source2: https://ftp.pcre.org/pub/pcre/Public-Key
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# Do no set RPATH if libdir is not /usr/lib
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Patch0: pcre2-10.10-Fix-multilib.patch
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# Upstream patch: https://github.com/PCRE2Project/pcre2/commit/4851890ede31313655e19180f4959ed348fee580
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Patch1: pcre2-10.40-Fix-JIT-regression-in-PHP.patch
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BuildRequires: autoconf
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BuildRequires: automake
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@ -258,6 +260,9 @@ make %{?_smp_mflags} check VERBOSE=yes
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%{_mandir}/man1/pcre2test.*
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%changelog
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* Tue Oct 17 2023 Lukas Javorsky <ljavorsk@redhat.com> - 10.40-3
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- Fix issue in the backtracking optimization of character in JIT
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* Wed May 18 2022 Lukas Javorsky <ljavorsk@redhat.com> - 10.40-2
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- Explicitly require uft subpackages in tools subpackage
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