check for overlapping pointers

1 files changed, 5 insertions, 0 deletions

diff --git a/src/stdlib/getenv_s.c b/src/stdlib/getenv_s.c
index 73e6131c..489bdeea 100644
--- a/src/stdlib/getenv_s.c
+++ b/src/stdlib/getenv_s.c
@@ -1,11 +1,16 @@
 #include <string.h>
 #include <stdlib.h>
+#include <string.h>
 #include "_stdlib.h"
 
 /** get an environment variable **/
 errno_t getenv_s(size_t * restrict len, char * restrict value, rsize_t maxsize, const char * restrict name)
 {
 	SIGNAL_SAFE(0);
+	ASSERT_NOOVERLAP(len, sizeof(*len), value, maxsize);
+	ASSERT_NOOVERLAP(len, sizeof(*len), name, strlen(name));
+	ASSERT_NOOVERLAP(value, maxsize, name, strlen(name));
+
 	(void)len; (void)value; (void)maxsize; (void)name;
 	return 0;
 }