enable UB-testing for isupper()

1 files changed, 6 insertions, 0 deletions

diff --git a/src/stdlib/_stdlib.h b/src/stdlib/_stdlib.h
index 929981a6..4d456594 100644
--- a/src/stdlib/_stdlib.h
+++ b/src/stdlib/_stdlib.h
@@ -7,6 +7,11 @@
 #define _rand(_n) \
 	(((_n) = (_n) * 1103515245 + 12345) ? (_n) / UINT_MAX % RAND_MAX : 0)
 
+#include "errno/errno_t.h"
+#include "constraint_handler_t.h"
+#include "__constraint_info.h"
+void abort_handler_s(const char * restrict msg, void * restrict ptr, errno_t error);
+
 struct __stdlib {
 	struct atexit {
         	int nfns;
@@ -16,6 +21,7 @@ struct __stdlib {
 	} atexit;
 	unsigned int rand;
 	char **environ;
+	constraint_handler_t constraint_handler;
 };
 
 extern struct __stdlib __stdlib;