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[PATCH] vfprintf: Avoid creating a VLA which complicates stack management
- From: fweimer at redhat dot com (Florian Weimer)
- To: libc-alpha at sourceware dot org
- Date: Fri, 02 Sep 2016 12:57:23 +0200
- Subject: [PATCH] vfprintf: Avoid creating a VLA which complicates stack management
- Authentication-results: sourceware.org; auth=none
2016-09-02 Florian Weimer <fweimer@redhat.com>
* stdio-common/vfprintf.c (process_string_arg): Use MB_LEN_MAX
instead of MB_CUR_MAX to avoid variable-length array.
diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c
index 6e428e9..13ab47a 100644
--- a/stdio-common/vfprintf.c
+++ b/stdio-common/vfprintf.c
@@ -1082,7 +1082,7 @@ static const uint8_t jump_table[] =
LABEL (form_wcharacter): \
{ \
/* Wide character. */ \
- char buf[MB_CUR_MAX]; \
+ char buf[MB_LEN_MAX]; \
mbstate_t mbstate; \
size_t len; \
\