Use __P.

diff --git a/lib/xstrtod.h b/lib/xstrtod.h
index 69c7877..15b85f4 100644 (file)
--- a/lib/xstrtod.h
+++ b/lib/xstrtod.h
@@ -10,6 +10,6 @@
 #endif  /* Not __P.  */
 
 int
-  xstrtod (const char *str, const char **ptr, double *result);
+  xstrtod __P ((const char *str, const char **ptr, double *result));
 
 #endif /* XSTRTOD_H */