Fix a memory leak when assignig to a localized ${^WARNING_BITS}

perl-5.29.9-fix-leak-with-local-WARNING_BITS.patch

@@ -0,0 +1,39 @@
+From 1113f30d91f662c876a07b357666f02f04a30a75 Mon Sep 17 00:00:00 2001
+From: David Mitchell <davem@iabyn.com>
+Date: Mon, 25 Mar 2019 17:18:58 +0000
+Subject: [PATCH] fix leak with local ${^WARNING_BITS} = ...
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+When restoring the old value, need to free the current value first.
+Can be reproduced with
+
+    {
+        local ${^WARNING_BITS} = 'swit';
+    }
+
+when run under ASan or similar.
+An equivalent test already exists in t/op/leaky-magic.t.
+
+Signed-off-by: Petr Písař <ppisar@redhat.com>
+---
+ mg.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/mg.c b/mg.c
+index b022d63442..320e2d39bb 100644
+--- a/mg.c
++++ b/mg.c
+@@ -2916,6 +2916,8 @@ Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
+ 	else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) {
+ 	    if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
+ 		if (!SvPOK(sv)) {
++                    if (!specialWARN(PL_compiling.cop_warnings))
++                        PerlMemShared_free(PL_compiling.cop_warnings);
+ 	            PL_compiling.cop_warnings = pWARN_STD;
+ 		    break;
+ 		}
+-- 
+2.20.1
+

perl.spec

@@ -287,6 +287,10 @@ Patch62:        perl-5.29.9-fix-leak-in-BEGIN-threads-new.patch
 # string, in upstream after 5.29.9
 Patch63:        perl-5.29.9-avoid-leak-assigning-regexp-to-non-COW-string.patch
 
+# Fix a memory leak when assignig to a localized ${^WARNING_BITS},
+# in upstream after 5.29.9
+Patch64:        perl-5.29.9-fix-leak-with-local-WARNING_BITS.patch
+
 # Link XS modules to libperl.so with EU::CBuilder on Linux, bug #960048
 Patch200:       perl-5.16.3-Link-XS-modules-to-libperl.so-with-EU-CBuilder-on-Li.patch
 
@@ -2906,6 +2910,7 @@ Perl extension for Version Objects
 %patch61 -p1
 %patch62 -p1
 %patch63 -p1
+%patch64 -p1
 %patch200 -p1
 %patch201 -p1
 
@@ -2961,6 +2966,7 @@ perl -x patchlevel.h \
     'Fedora Patch61: Fix a memory leak when cloning a regular expression' \
     'Fedora Patch62: Fix a memory leak when spawning threads in a BEGIN phase' \
     'Fedora Patch63: Fix a memory leak when assigning a regular expression to a non-copy-on-write string' \
+    'Fedora Patch64: Fix a memory leak when assignig to a localized ${^WARNING_BITS}' \
     'Fedora Patch200: Link XS modules to libperl.so with EU::CBuilder on Linux' \
     'Fedora Patch201: Link XS modules to libperl.so with EU::MM on Linux' \
     %{nil}
@@ -5258,6 +5264,7 @@ popd
 - Fix a memory leak when cloning a regular expression
 - Fix a memory leak when spawning threads in a BEGIN phase
 - Fix a memory leak when assigning a regular expression to a non-copy-on-write string
+- Fix a memory leak when assignig to a localized ${^WARNING_BITS}
 
 * Tue Mar 05 2019 Björn Esser <besser82@fedoraproject.org> - 4:5.28.1-434
 - Add explicit Requires: libxcrypt-devel to devel sub-package (bug #1666098)