From: Matthias Braun <matze@braunis.de>
Date: Thu, 17 Jun 2010 09:19:30 +0000 (+0000)
Subject: fix obstack_printf function - we have to explicitely copy va_list ap, because vsnprin... 
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=d932e36cb60d0edbe287931fa1c03807de438a82;p=libfirm

fix obstack_printf function - we have to explicitely copy va_list ap, because vsnprintf consumes it

[r27630]
---

diff --git a/ir/obstack/obstack_printf.c b/ir/obstack/obstack_printf.c
index 9d92092eb..eb5b86e45 100644
--- a/ir/obstack/obstack_printf.c
+++ b/ir/obstack/obstack_printf.c
@@ -16,7 +16,9 @@ int obstack_vprintf(struct obstack *obst, const char *fmt, va_list ap)
 	int     len;
 
 	for (;;) {
-		len = vsnprintf(buffer, size, fmt, ap);
+		va_list tap;
+		va_copy(tap, ap);
+		len = vsnprintf(buffer, size, fmt, tap);
 
 		/* snprintf should return -1 only in the error case, but older glibcs
 		 * and probably other systems are buggy in this respect and return -1 if