2011-10-24 Richard Guenther <rguenther@suse.de>

	PR tree-optimization/50838
	* tree-data-ref.c (dr_analyze_indices): Properly canonicalize
	a MEM_REF base if we change it.

	* gcc.dg/torture/pr50838.c: New testcase.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@180381 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 27 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/torture/pr50838.c b/gcc/testsuite/gcc.dg/torture/pr50838.c
new file mode 100644
index 00000000000..a3911c9752a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr50838.c
@@ -0,0 +1,27 @@
+/* { dg-do compile } */
+
+typedef void * gcv_object_t;
+typedef gcv_object_t object;
+typedef const void * Pseudofun;
+extern struct pseudocode_tab_ {
+    Pseudofun pseudo_eql;
+    Pseudofun pseudo_iconv_wcslen;
+    Pseudofun pseudo_iconv_wcstombs;
+    Pseudofun pseudo_iconv_range;
+}
+pseudocode_tab;
+extern struct symbol_tab_ {
+    object pointer[1024];
+} pseudofun_tab;
+int
+init_memory (void)
+{
+  object* ptr2 = &pseudofun_tab.pointer[0];
+  const Pseudofun* ptr1 = (const Pseudofun*)&pseudocode_tab;
+  unsigned int count = (sizeof(pseudocode_tab)/sizeof(Pseudofun));
+  while (count--)
+    {
+      *ptr2++ = (gcv_object_t)(((unsigned char *)((*ptr1))));
+      ptr1++;
+    }
+}