--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.c-torture/execute/builtins/pr93262-chk.c	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,55 @@
+/* PR tree-optimization/93262 */
+
+extern void abort (void);
+typedef __SIZE_TYPE__ size_t;
+extern void *memcpy (void *, const void *, size_t);
+extern void *memset (void *, int, size_t);
+
+#include "chk.h"
+
+char b[32] = "def";
+char a[32] = "abc";
+char c[32] = "ghi";
+int l1;
+
+__attribute__((noipa, noinline, noclone, optimize ("tree-dse"))) void
+foo (char *b)
+{
+  memcpy (a, b, 48);
+  memset (a, ' ', 16);
+}
+
+__attribute__((noipa, noinline, noclone, optimize ("tree-dse"))) void
+bar (void)
+{
+  memset (a, ' ', 48);
+  memset (a, '0', 16);
+}
+
+void
+main_test (void)
+{
+#ifndef __OPTIMIZE__
+  /* Object size checking is only intended for -O[s123].  */
+  return;
+#endif
+  __asm ("" : "=r" (l1) : "0" (l1));
+  chk_calls = 0;
+  chk_fail_allowed = 1;
+  /* Runtime checks.  */
+  if (__builtin_setjmp (chk_fail_buf) == 0)
+    {
+      foo ("0123456789abcdeffedcba9876543210ghijklmnopqrstuv");
+      if (!l1)
+	abort ();
+    }
+  if (__builtin_setjmp (chk_fail_buf) == 0)
+    {
+      bar ();
+      if (!l1)
+	abort ();
+    }
+  if (chk_calls != 2)
+    abort ();
+  return 0;
+}