From: Richard Biener <rguenther@suse.de>
Date: Thu, 15 Aug 2019 12:05:31 +0000 (+0000)
Subject: re PR tree-optimization/91445 (After memset, logical && operator produces false resul... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=84cc60bf83e03267f5794a16b3eb83508a3196ce;p=gcc.git

re PR tree-optimization/91445 (After memset, logical && operator produces false result, optimization level >=O1)

2019-08-15  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/91445
	* gcc.dg/torture/pr91445.c: New testcase.

From-SVN: r274533
---

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d076a771740..a21600b4cc9 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-08-15  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/91445
+	* gcc.dg/torture/pr91445.c: New testcase.
+
 2019-08-15  Richard Biener  <rguenther@suse.de>
 
 	* gcc.dg/pr80170.c: Adjust to use __SIZETYPE__.
diff --git a/gcc/testsuite/gcc.dg/torture/pr91445.c b/gcc/testsuite/gcc.dg/torture/pr91445.c
new file mode 100644
index 00000000000..1d24d456a57
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr91445.c
@@ -0,0 +1,22 @@
+/* { dg-do run } */
+
+struct S { _Bool x; };
+
+void
+foo (struct S *s)
+{
+  __builtin_memset (s, 0x11, sizeof (struct S));
+  s->x = 1;
+}
+
+int
+main ()
+{
+  struct S s;
+  foo (&s);
+  char c;
+  __builtin_memcpy (&c, &s.x, 1);
+  if (c != 1)
+    __builtin_abort ();
+  return 0;
+}