1 files changed, 17 insertions, 0 deletions

diff --git a/include/stdlib.h b/include/stdlib.h
index 5d89c9c..4a5cfde 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -37,6 +37,23 @@ __extension__
 extern "C" {
 #endif
 
+#undef qsort
+#if __has_builtin(__builtin_qsort)
+__diagnose_as_builtin(__builtin_qsort, 1, 2, 3, 4)
+#endif
+__access(read_write, 1)
+_FORTIFY_FN(qsort) void qsort(void * _FORTIFY_POS0 base, size_t nmemb, size_t size,
+        int (*compar)(const void *, const void *))
+{
+        size_t __b = __bos(base, 0);
+
+        if (__bmo(nmemb, size))
+                __builtin_trap();
+        if (nmemb * size> __b)
+                __builtin_trap();
+
+        return __orig_qsort(base, nmemb, size, compar);
+}
 
 /* FIXME clang */
 #if !defined(__clang__)