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-rw-r--r--stdio-common/tst-sprintf.c19
-rw-r--r--stdio-common/vfprintf.c2
2 files changed, 20 insertions, 1 deletions
diff --git a/stdio-common/tst-sprintf.c b/stdio-common/tst-sprintf.c
new file mode 100644
index 0000000000..afbacd9037
--- /dev/null
+++ b/stdio-common/tst-sprintf.c
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <string.h>
+
+
+int
+main (void)
+{
+  char buf[100];
+  int result = 0;
+
+  if (sprintf (buf, "%.0ls", L"foo") != 0
+      || strlen (buf) != 0)
+    {
+      puts ("sprintf (buf, \"%.0ls\", L\"foo\") produced some output\n");
+      result = 1;
+    }
+
+  return result;
+}
diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c
index c5e78c7499..febd094729 100644
--- a/stdio-common/vfprintf.c
+++ b/stdio-common/vfprintf.c
@@ -1195,7 +1195,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
 									      \
 	    memset (&mbstate, '\0', sizeof (mbstate_t));		      \
 									      \
-	    if (prec > 0)						      \
+	    if (prec >= 0)						      \
 	      {								      \
 		/* The string `s2' might not be NUL terminated.  */	      \
 		if (prec < 32768					      \