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-rw-r--r--libkern/vsnprint.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/libkern/vsnprint.c b/libkern/vsnprint.c
index 841d142c..2006cfb3 100644
--- a/libkern/vsnprint.c
+++ b/libkern/vsnprint.c
@@ -12,6 +12,7 @@
* OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
*/
#include "lib9.h"
+#include "fmtdef.h"
int
vsnprint(char *buf, int len, char *fmt, va_list args)
@@ -27,8 +28,9 @@ vsnprint(char *buf, int len, char *fmt, va_list args)
f.flush = nil;
f.farg = nil;
f.nfmt = 0;
- f.args = args;
+ va_copy(f.args, args);
dofmt(&f, fmt);
+ va_end(f.args);
*(char*)f.to = '\0';
return (char*)f.to - buf;
}