1 files changed, 52 insertions, 0 deletions

diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0305-PR-middle-end-49029.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0305-PR-middle-end-49029.patch
new file mode 100644
index 0000000000..47d896c6b7
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0305-PR-middle-end-49029.patch
@@ -0,0 +1,52 @@
+From 7f6851f9e44e25a3ddb77bf09b6e138a9c39bbf0 Mon Sep 17 00:00:00 2001
+From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Sun, 22 May 2011 19:02:59 +0000
+Subject: [PATCH]        PR middle-end/49029
+        * expmed.c (extract_fixed_bit_field): Test whether target can be used
+        only after deciding which mode to use.
+
+        * gcc.c-torture/compile/pr49029.c: New test.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174036 138bc75d-0d04-0410-961f-82ee72b054a4
+
+index 6c35f8e..0d44b2b 100644
+--- a/gcc/expmed.c
++++ b/gcc/expmed.c
+@@ -1875,8 +1875,6 @@ extract_fixed_bit_field (enum machine_mode tmode, rtx op0,
+   /* To extract a signed bit-field, first shift its msb to the msb of the word,
+      then arithmetic-shift its lsb to the lsb of the word.  */
+   op0 = force_reg (mode, op0);
+-  if (mode != tmode)
+-    target = 0;
+ 
+   /* Find the narrowest integer mode that contains the field.  */
+ 
+@@ -1888,6 +1886,9 @@ extract_fixed_bit_field (enum machine_mode tmode, rtx op0,
+        break;
+       }
+ 
++  if (mode != tmode)
++    target = 0;
++
+   if (GET_MODE_BITSIZE (mode) != (bitsize + bitpos))
+     {
+       tree amount
+new file mode 100644
+index 0000000..ebe81b3
+--- /dev/null
++++ b/gcc/testsuite/gcc.c-torture/compile/pr49029.c
+@@ -0,0 +1,10 @@
++/* PR middle-end/49029 */
++struct S { volatile unsigned f : 11; signed g : 30; } __attribute__((packed));
++struct T { volatile struct S h; } __attribute__((packed)) a;
++void foo (int);
++
++void
++bar ()
++{
++  foo (a.h.g);
++}
+-- 
+1.7.0.4
+