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-rw-r--r--src/stdlib/strtoul.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/stdlib/strtoul.c b/src/stdlib/strtoul.c
index 1270c92c..35c146c3 100644
--- a/src/stdlib/strtoul.c
+++ b/src/stdlib/strtoul.c
@@ -2,6 +2,7 @@
#include <ctype.h>
#include <limits.h>
#include <stdlib.h>
+#include <string.h>
#include "_stdlib.h"
/** convert string to unsigned long integer **/
@@ -13,6 +14,7 @@ unsigned long int strtoul(const char * nptr, char ** endptr, int base)
unsigned long int min = 0;
SIGNAL_SAFE(0);
+ ASSERT_NOOVERLAP(nptr, strlen(nptr), endptr, sizeof(*endptr));
#include "_strtoi.h"