Do not use SSE2 instructions on x86 CPUs without SSE2 support

Fedora < 29 supports i686 without SSE2
<https://fedoraproject.org/wiki/Changes/Update_i686_architectural_baseline_to_include_SSE2>.

pcre2-10.33-RC1-Disable-SSE2-JIT-optimizations-in-x86-CPUs-when-SSE2.patch

@@ -0,0 +1,30 @@
+From 706a1c624c591e404a7739b49fd33830427ff2af Mon Sep 17 00:00:00 2001
+From: zherczeg <zherczeg@6239d852-aaf2-0410-a92c-79f79f948069>
+Date: Mon, 25 Mar 2019 14:10:24 +0000
+Subject: [PATCH] Disable SSE2 JIT optimizations in x86 CPUs when SSE2 is not
+ available.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@1082 6239d852-aaf2-0410-a92c-79f79f948069
+Signed-off-by: Petr Písař <ppisar@redhat.com>
+---
+ src/pcre2_jit_compile.c | 2 +-
+
+diff --git a/src/pcre2_jit_compile.c b/src/pcre2_jit_compile.c
+index 6519b4b..256356c 100644
+--- a/src/pcre2_jit_compile.c
++++ b/src/pcre2_jit_compile.c
+@@ -6268,7 +6268,7 @@ for (i = 0; i < max; i++)
+   }
+ 
+ #if (defined SLJIT_CONFIG_X86 && SLJIT_CONFIG_X86) && !(defined SUPPORT_VALGRIND) && !(defined _WIN64)
+-if (check_fast_forward_char_pair_sse2(common, chars, max))
++if (sljit_has_cpu_feature(SLJIT_HAS_SSE2) && check_fast_forward_char_pair_sse2(common, chars, max))
+   return TRUE;
+ #endif
+ 
+-- 
+2.20.1
+

pcre2.spec

@@ -9,7 +9,7 @@
 %global rcversion RC1
 Name:       pcre2
 Version:    10.33
-Release:    %{?rcversion:0.}3%{?rcversion:.%rcversion}%{?dist}
+Release:    %{?rcversion:0.}4%{?rcversion:.%rcversion}%{?dist}
 %global     myversion %{version}%{?rcversion:-%rcversion}
 Summary:    Perl-compatible regular expression library
 # the library:                          BSD with exceptions
@@ -52,6 +52,9 @@ Patch0:     pcre2-10.10-Fix-multilib.patch
 # Fix a crash in pcre2_substitute() function if mcontext argument is NULL,
 # bug #1686434, upstream bug #2382, in upstream after 10.33-RC1
 Patch1:     pcre2-10.33-RC1-Fix-crash-in-pcre2_substitute-with-NULL-match-contex.patch
+# Do not use SSE2 instructions on x86 CPUs without SSE2 support,
+# upstream bug #2385, in upstream after 10.33-RC1
+Patch2:     pcre2-10.33-RC1-Disable-SSE2-JIT-optimizations-in-x86-CPUs-when-SSE2.patch
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  coreutils
@@ -129,6 +132,7 @@ Utilities demonstrating PCRE2 capabilities like pcre2grep or pcre2test.
 %setup -q -n %{name}-%{myversion}
 %patch0 -p1
 %patch1 -p1
+%patch2 -p1
 # Because of multilib patch
 libtoolize --copy --force
 autoreconf -vif
@@ -227,6 +231,10 @@ make %{?_smp_mflags} check VERBOSE=yes
 %{_mandir}/man1/pcre2test.*
 
 %changelog
+* Tue Mar 26 2019 Petr Pisar <ppisar@redhat.com> - 10.33-0.4.RC1
+- Do not use SSE2 instructions on x86 CPUs without SSE2 support
+  (upstream bug #2385)
+
 * Wed Mar 13 2019 Petr Pisar <ppisar@redhat.com> - 10.33-0.3.RC1
 - Use upstream fix for a crash in pcre2_substitute() function if mcontext
   argument is NULL (bug #1686434)