obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 67 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20030731-1.c b/gcc/testsuite/gcc.dg/tree-ssa/20030731-1.c
new file mode 100644
index 000000000..a16f49dbb
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/20030731-1.c
@@ -0,0 +1,67 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -fdump-tree-dom2" } */
+  
+extern void abort (void);
+
+struct rtx_def;
+typedef struct rtx_def *rtx;
+struct rtvec_def;
+typedef struct rtvec_def *rtvec;
+union tree_node;
+typedef union tree_node *tree;
+struct rtx_def
+{
+  int code;
+  int mode;
+  unsigned int in_struct:1;
+};
+struct tree_common
+{
+  int code;
+};
+struct tree_decl
+{
+  rtx rtl;
+};
+union tree_node
+{
+  struct tree_common common;
+  struct tree_decl decl;
+};
+rtx
+store_expr (exp, target, want_value)
+     tree exp;
+     rtx target;
+     int want_value;
+{
+  if (exp->common.code == 42)
+    abort ();
+  else if (queued_subexp_p (target))
+    {
+      blah (target->mode);
+      if (target->code)
+        abort ();
+    }
+  else
+    {
+      if (target->code && (__extension__({target;})->in_struct));
+    }
+
+  if ((target != (exp->decl.rtl
+		  ? (exp->decl.rtl
+		     ? exp->decl.rtl
+		     : (make_decl_rtl (exp, 0), exp->decl.rtl))
+		  : 0))
+      && expr_size (exp))
+    ;
+}
+
+/* All paths to the test "target != 0" occuring in the final IF statement
+   dereference target.  Thus target can not have the value zero at that
+   point and the test should have been eliminated.  */
+/* ??? The dominator walker (A) doesn't merge this data at joins and
+   (B) only looks at immediate dominators, and only queued_subexp_p
+   immediately dominates the comparison in question.  We need something
+   stronger.  */
+/* { dg-final { scan-tree-dump-times "target.*!= 0" 0 "dom2" { xfail *-*-* } } } */
+/* { dg-final { cleanup-tree-dump "dom2" } } */