1 files changed, 21 insertions, 0 deletions
diff --git a/newlib/libc/ssp/mempcpy_chk.c b/newlib/libc/ssp/mempcpy_chk.c
new file mode 100644
index 0000000..fc2ccf8
--- /dev/null
+++ b/newlib/libc/ssp/mempcpy_chk.c
@@ -0,0 +1,21 @@
+#define _GNU_SOURCE
+#include <sys/cdefs.h>
+#include <ssp/ssp.h>
+#include <string.h>
+
+#undef mempcpy
+
+void *__mempcpy_chk(void * __restrict, const void * __restrict, size_t, size_t);
+
+void *
+__mempcpy_chk(void * __restrict dst, const void * __restrict src, size_t len,
+    size_t slen)
+{
+	if (len > slen)
+		__chk_fail();
+
+	if (__ssp_overlap((const char *)src, (const char *)dst, len))
+		__chk_fail();
+
+	return mempcpy(dst, src, len);
+}