add strdup() (and forced version) for tracking previous string values

1 files changed, 12 insertions, 0 deletions

diff --git a/src/string/strdup.c b/src/string/strdup.c
new file mode 100644
index 00000000..9780deaa
--- /dev/null
+++ b/src/string/strdup.c
@@ -0,0 +1,12 @@
+#include <string.h>
+#include <stdlib.h>
+#include "_safety.h"
+
+char *strdup(const char *s)
+{
+	ASSERT_NONNULL(s);
+	size_t len = strlen(s) + 1;
+	char *dup = malloc(len);
+	memcpy(dup, s, len);
+	return dup;
+}