diff --git a/src/regression/malloc-brk-fail.c b/src/regression/malloc-brk-fail.c
index c89cee0..d0ccd35 100644
--- a/src/regression/malloc-brk-fail.c
+++ b/src/regression/malloc-brk-fail.c
@@ -1,3 +1,4 @@
+// commit 5446303328adf4b4e36d9fba21848e6feb55fab4 2014-04-02
 // malloc should not fail if brk fails but mmap can still allocate
 #include <stdlib.h>
 #include <errno.h>
@@ -32,7 +33,7 @@ int main(void)
 		t_error("malloc did not fail with ENOMEM, got %s\n", strerror(errno));
 
 	// make some space available for mmap
-	T(munmap(p+65536, 65536));
+	T(munmap((char*)p+65536, 65536));
 
 	// malloc should succeed now
 	q = malloc(10000);
diff --git a/src/regression/memmem-oob.c b/src/regression/memmem-oob.c
index f3c57ad..2be928d 100644
--- a/src/regression/memmem-oob.c
+++ b/src/regression/memmem-oob.c
@@ -1,4 +1,7 @@
 // memmem should not access oob data
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
 #include <string.h>
 #include "test.h"