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, 38 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr41837.c b/gcc/testsuite/gcc.dg/pr41837.c
new file mode 100644
index 000000000..f96c34735
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr41837.c
@@ -0,0 +1,38 @@
+/* PR middle-end/41837 */
+/* { dg-do compile } */
+/* { dg-options "-fipa-struct-reorg -O -fwhole-program -fprofile-generate" } */
+
+typedef struct { int a, b; } T1;
+typedef struct S1 *T2;
+typedef struct S2 *T3;
+typedef struct S3 *T4;
+typedef struct S4 *T5;
+struct S4 { union { int c; } d; };
+struct S2 { int e; T2 f; int g; };
+typedef struct { T3 h; } T6;
+typedef struct { int i; } *T7;
+struct S3 { T6 j; T7 k; };
+
+void
+f1 (T4 x)
+{
+  if (!x->j.h->e)
+    f5 (x);
+}
+
+void
+f2 (void)
+{
+  f6 (f1);
+}
+
+void
+f3 (T5 x, T1 *y)
+{
+}
+
+void
+f4 (void)
+{
+  f7 (f3);
+}