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, 28 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr42475.c b/gcc/testsuite/gcc.dg/pr42475.c
new file mode 100644
index 000000000..a5edffa78
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr42475.c
@@ -0,0 +1,28 @@
+/* PR rtl-optimization/42475 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+typedef struct { float x, y; } B;
+typedef struct { float z; } C;
+typedef struct { B b; C c; } D;
+
+B
+foo (float x, float y)
+{
+  B b = { .x = x, .y = y };
+  return b;
+}
+
+B
+bar (B b, B y)
+{
+  return foo (y.x + b.x, b.y);
+}
+
+B
+baz (D p)
+{
+  D d = { };
+  B y = bar (foo (0, (p.c.z) / 2), d.b);
+  return y;
+}