Fix strtoul probe to compile under clang++.

Add the missing stdlib.h header and remove an unnecessary prototype.

diff --git a/U/modified/d_strtoul.U b/U/modified/d_strtoul.U
index 45a38c4..01c7735 100644 (file)
--- a/U/modified/d_strtoul.U
+++ b/U/modified/d_strtoul.U
@@ -40,9 +40,9 @@ EOM
        $cat >try.c <<'EOCP'
 #include <errno.h>
 #include <stdio.h>
-extern unsigned long int strtoul(char *s, char **, int);
+#include <stdlib.h>
 static int bad = 0;
-void check(char *s, unsigned long eul, int een) {
+void check(const char *s, unsigned long eul, int een) {
        unsigned long gul;
        errno = 0;
        gul = strtoul(s, 0, 10);