dev-libs/libpcre2: fix incorrect detection of alternatives

...in first character search.

Package-Manager: Portage-3.0.28, Repoman-3.0.3
Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>

2 files changed, 146 insertions, 0 deletions

diff --git a/dev-libs/libpcre2/files/libpcre2-10.38-fix-fix-incorrect-detection-of-alternatives-in-first-character-search.patch b/dev-libs/libpcre2/files/libpcre2-10.38-fix-fix-incorrect-detection-of-alternatives-in-first-character-search.patch
new file mode 100644
index 000000000000..936bd057a0e9
--- /dev/null
+++ b/dev-libs/libpcre2/files/libpcre2-10.38-fix-fix-incorrect-detection-of-alternatives-in-first-character-search.patch
@@ -0,0 +1,49 @@
+https://github.com/PhilipHazel/pcre2/pull/22
+
+--- a/src/pcre2_jit_compile.c
++++ b/src/pcre2_jit_compile.c
+@@ -1251,10 +1251,13 @@ SLJIT_ASSERT(*cc == OP_ONCE || *cc == OP_BRA || *cc == OP_CBRA);
+ SLJIT_ASSERT(*cc != OP_CBRA || common->optimized_cbracket[GET2(cc, 1 + LINK_SIZE)] != 0);
+ SLJIT_ASSERT(start < EARLY_FAIL_ENHANCE_MAX);
+ 
++next_alt = cc + GET(cc, 1);
++if (*next_alt == OP_ALT)
++  fast_forward_allowed = FALSE;
++
+ do
+   {
+   count = start;
+-  next_alt = cc + GET(cc, 1);
+   cc += 1 + LINK_SIZE + ((*cc == OP_CBRA) ? IMM2_SIZE : 0);
+ 
+   while (TRUE)
+@@ -1512,7 +1515,7 @@ do
+         {
+         count++;
+ 
+-        if (fast_forward_allowed && *next_alt == OP_KET)
++        if (fast_forward_allowed)
+           {
+           common->fast_forward_bc_ptr = accelerated_start;
+           common->private_data_ptrs[(accelerated_start + 1) - common->start] = ((*private_data_start) << 3) | type_skip;
+@@ -1562,8 +1565,8 @@ do
+   else if (result < count)
+     result = count;
+ 
+-  fast_forward_allowed = FALSE;
+   cc = next_alt;
++  next_alt = cc + GET(cc, 1);
+   }
+ while (*cc == OP_ALT);
+ 
+--- a/src/pcre2_jit_test.c
++++ b/src/pcre2_jit_test.c
+@@ -352,6 +352,7 @@ static struct regression_test_case regression_test_cases[] = {
+ 	{ MU, A, 0, 0, ".[ab]?.", "xx" },
+ 	{ MU, A, 0, 0, "_[ab]+_*a", "_aa" },
+ 	{ MU, A, 0, 0, "#(A+)#\\d+", "#A#A#0" },
++	{ MU, A, 0, 0, "(?P<size>\\d+)m|M", "4M" },
+ 
+ 	/* Bracket repeats with limit. */
+ 	{ MU, A, 0, 0, "(?:(ab){2}){5}M", "abababababababababababM" },
+ 
diff --git a/dev-libs/libpcre2/libpcre2-10.38-r1.ebuild b/dev-libs/libpcre2/libpcre2-10.38-r1.ebuild
new file mode 100644
index 000000000000..1b287f08fb0e
--- /dev/null
+++ b/dev-libs/libpcre2/libpcre2-10.38-r1.ebuild
@@ -0,0 +1,97 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit libtool multilib-minimal usr-ldscript
+
+PATCH_SET="${PN}-10.36-patchset-01.tar.xz"
+
+DESCRIPTION="Perl-compatible regular expression library"
+HOMEPAGE="https://www.pcre.org/"
+MY_P="pcre2-${PV/_rc/-RC}"
+if [[ ${PV} != *_rc* ]] ; then
+	# Only the final releases are available here.
+	SRC_URI="mirror://sourceforge/pcre/${MY_P}.tar.bz2
+		https://ftp.pcre.org/pub/pcre/${MY_P}.tar.bz2
+		https://github.com/PhilipHazel/pcre2/releases/download/${MY_P}/${MY_P}.tar.bz2"
+else
+	SRC_URI="https://ftp.pcre.org/pub/pcre/Testing/${MY_P}.tar.bz2"
+fi
+
+if [[ -n "${PATCH_SET}" ]] ; then
+	SRC_URI+=" https://dev.gentoo.org/~whissi/dist/${PN}/${PATCH_SET}
+		https://dev.gentoo.org/~polynomial-c/dist/${PATCH_SET}"
+fi
+
+LICENSE="BSD"
+SLOT="0/3" # libpcre2-posix.so version
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="bzip2 +jit libedit +pcre16 pcre32 +readline +recursion-limit static-libs unicode zlib"
+REQUIRED_USE="?? ( libedit readline )"
+
+BDEPEND="
+	virtual/pkgconfig
+	userland_GNU? ( >=sys-apps/findutils-4.4.0 )
+"
+RDEPEND="
+	bzip2? ( app-arch/bzip2 )
+	libedit? ( dev-libs/libedit )
+	readline? ( sys-libs/readline:0= )
+	zlib? ( sys-libs/zlib )
+"
+DEPEND="${RDEPEND}"
+
+S="${WORKDIR}/${MY_P}"
+
+PATCHES=( "${FILESDIR}"/${P}-fix-fix-incorrect-detection-of-alternatives-in-first-character-search.patch )
+
+MULTILIB_CHOST_TOOLS=(
+	/usr/bin/pcre2-config
+)
+
+src_prepare() {
+	if [[ -d "${WORKDIR}/patches" ]] ; then
+		rm "${WORKDIR}"/patches/pcre2-10.36-001-issue2698.patch || die
+		eapply "${WORKDIR}"/patches
+	fi
+
+	default
+
+	elibtoolize
+}
+
+multilib_src_configure() {
+	local myeconfargs=(
+		--enable-pcre2-8
+		--enable-shared
+		--with-match-limit-depth=$(usex recursion-limit 8192 MATCH_LIMIT)
+		$(multilib_native_use_enable bzip2 pcre2grep-libbz2)
+		$(multilib_native_use_enable libedit pcre2test-libedit)
+		$(multilib_native_use_enable readline pcre2test-libreadline)
+		$(multilib_native_use_enable zlib pcre2grep-libz)
+		$(use_enable jit)
+		$(use_enable jit pcre2grep-jit)
+		$(use_enable pcre16 pcre2-16)
+		$(use_enable pcre32 pcre2-32)
+		$(use_enable static-libs static)
+		$(use_enable unicode)
+	)
+	ECONF_SOURCE="${S}" econf "${myeconfargs[@]}"
+}
+
+multilib_src_compile() {
+	emake V=1 $(multilib_is_native_abi || echo "bin_PROGRAMS=")
+}
+
+multilib_src_install() {
+	emake \
+		DESTDIR="${D}" \
+		$(multilib_is_native_abi || echo "bin_PROGRAMS= dist_html_DATA=") \
+		install
+	multilib_is_native_abi && gen_usr_ldscript -a pcre2-posix
+}
+
+multilib_src_install_all() {
+	find "${ED}" -type f -name "*.la" -delete || die
+}