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-rw-r--r--printf/printffuns.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/printf/printffuns.c b/printf/printffuns.c
index b5d179358..60fddff47 100644
--- a/printf/printffuns.c
+++ b/printf/printffuns.c
@@ -37,6 +37,9 @@ MA 02111-1307, USA. */
#include "gmp.h"
#include "gmp-impl.h"
+/* SunOS 4 stdio.h doesn't provide a prototype for this */
+int vfprintf _PROTO ((FILE *fp, const char *fmt, va_list ap));
+
static int
gmp_fprintf_memory (FILE *fp, const char *str, size_t len)