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-rw-r--r--libio/vsnprintf.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libio/vsnprintf.c b/libio/vsnprintf.c
index 5ac2317579..e223e5dec2 100644
--- a/libio/vsnprintf.c
+++ b/libio/vsnprintf.c
@@ -124,6 +124,7 @@ _IO_vsnprintf (string, maxlen, format, args)
_IO_init ((_IO_FILE *) &sf, 0);
_IO_JUMPS ((_IO_FILE *) &sf) = &_IO_strn_jumps;
+ string[0] = '\0';
_IO_str_init_static ((_IO_FILE *) &sf, string, maxlen - 1, string);
ret = _IO_vfprintf ((_IO_FILE *) &sf, format, args);