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[PATCH] regex: fix memory leak in compiler
From: |
Paul Eggert |
Subject: |
[PATCH] regex: fix memory leak in compiler |
Date: |
Fri, 11 Jul 2014 12:21:06 -0700 |
Fix by Andreas Schwab in:
https://sourceware.org/ml/libc-alpha/2014-06/msg00503.html
* lib/regcomp.c (parse_reg_exp): Deallocate partially
constructed tree before returning error.
---
ChangeLog | 8 ++++++++
lib/regcomp.c | 6 +++++-
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/ChangeLog b/ChangeLog
index 02c6676..0a7b82f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2014-07-11 Paul Eggert <address@hidden>
+
+ regex: fix memory leak in compiler
+ Fix by Andreas Schwab in:
+ https://sourceware.org/ml/libc-alpha/2014-06/msg00503.html
+ * lib/regcomp.c (parse_reg_exp): Deallocate partially
+ constructed tree before returning error.
+
2014-07-10 Assaf Gordon <address@hidden>
announce-gen: avoid perl warnings
diff --git a/lib/regcomp.c b/lib/regcomp.c
index 16d0e21..44c6c5e 100644
--- a/lib/regcomp.c
+++ b/lib/regcomp.c
@@ -2199,7 +2199,11 @@ parse_reg_exp (re_string_t *regexp, regex_t *preg,
re_token_t *token,
{
branch = parse_branch (regexp, preg, token, syntax, nest, err);
if (BE (*err != REG_NOERROR && branch == NULL, 0))
- return NULL;
+ {
+ if (tree != NULL)
+ postorder (tree, free_tree, NULL);
+ return NULL;
+ }
}
else
branch = NULL;
--
1.9.3
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