1 files changed, 31 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/tree-ssa/pr28003.C b/gcc-4.9/gcc/testsuite/g++.dg/tree-ssa/pr28003.C
new file mode 100644
index 000000000..ff260bcf4
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/tree-ssa/pr28003.C
@@ -0,0 +1,31 @@
+// PR tree-optimization/28003
+// Alias grouping needs to be computed after call clobbering, because it
+// changes around the tags and variables in a way that makes our
+// call clobbering computation incorrect.
+// { dg-do run }
+// { dg-options "-O2" }
+extern "C" void abort(void);
+struct A
+{
+  int i, j[9];
+  A() : i(1) { j[0]=j[1]=j[2]=j[3]=j[4]=j[5]=j[6]=j[7]=j[8]=0; }
+};
+
+struct B
+{
+  A a;
+};
+
+B b[] =
+{
+  {}, {}, {}, {}, {}, {}, {}, {}, {}, {},
+  {}, {}, {}, {}, {}, {}, {}, {}, {}, {},
+  {}, {}, {}, {}, {}
+};
+
+int main()
+{
+  if (1 - b[sizeof(b)/sizeof(B) - 1].a.i != 0)
+    abort();
+  return 0;
+}