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