From 1d84a25665013f389ffc6fad7dd133f1c6287a08 Mon Sep 17 00:00:00 2001
From: David Mitchell <davem@iabyn.com>
Date: Tue, 6 Aug 2019 14:36:45 +0100
Subject: [PATCH] include a trailing \0 in SVs holding trie info
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RT #13427
TRIE_STORE_REVCHAR() was creating SvPV()s with no trailing '\0'. This
doesn't really matter given the specialised use these are put to, but
it upset valgrind et al when perl was run with -Drv which printf("%s")'s
the contents of the string.
Signed-off-by: Petr Písař <ppisar@redhat.com>
---
regcomp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/regcomp.c b/regcomp.c
index 370221f72e..1117998fc8 100644
--- a/regcomp.c
+++ b/regcomp.c
@@ -2526,7 +2526,8 @@ is the recommended Unicode-aware way of saying
if (UTF) { \
SV *zlopp = newSV(UTF8_MAXBYTES); \
unsigned char *flrbbbbb = (unsigned char *) SvPVX(zlopp); \
- unsigned const char *const kapow = uvchr_to_utf8(flrbbbbb, val); \
+ unsigned char *const kapow = uvchr_to_utf8(flrbbbbb, val); \
+ *kapow = '\0'; \
SvCUR_set(zlopp, kapow - flrbbbbb); \
SvPOK_on(zlopp); \
SvUTF8_on(zlopp); \
--
2.20.1