Mercurial > hg > CbC > CbC_gcc

diff gcc/testsuite/gcc.dg/pr48335-4.c @ 111:04ced10e8804

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr48335-4.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,39 @@
+/* PR middle-end/48335 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-tree-sra" } */
+
+typedef short U __attribute__((may_alias, aligned (1)));
+
+struct S
+{
+  double d;
+};
+
+void bar (struct S);
+
+void
+f1 (int x)
+{
+  struct S s = { .d = 0.0 };
+  ((U *)((char *) &s.d + 1))[-1] = x;
+  __real__ s.d *= 7.0;
+  bar (s);
+}
+
+void
+f2 (int x)
+{
+  struct S s = { .d = 0.0 };
+  ((U *)((char *) &s.d + 1))[-2] = x;
+  __real__ s.d *= 7.0;
+  bar (s);
+}
+
+void
+f3 (int x)
+{
+  struct S s = { .d = 0.0 };
+  ((U *)((char *) &s.d + 1))[5] = x;
+  __real__ s.d *= 7.0;
+  bar (s);
+}