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, 29 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/debug/pr43972.c b/gcc/testsuite/gcc.dg/debug/pr43972.c
new file mode 100644
index 000000000..5fcf1e0e8
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/debug/pr43972.c
@@ -0,0 +1,29 @@
+/* PR debug/43972 */
+/* { dg-do compile } */
+/* { dg-options "-g -w" } */
+/* { dg-options "-g -fpic -w" { target fpic } } */
+
+struct { int *b1; } *f1 ();
+short v1[1];
+struct S { int b2; };
+void
+foo (struct S *a1, union { char *b3; unsigned *b4; int *b5; } *a2)
+{
+  int d;
+  switch (d)
+    {
+    case 0:
+      {
+	int c = a1->b2, i;
+	if (f1 () == 0)
+	  *a2->b3++ = 2;
+	else if (((long) (f1 () - f1 ())) ^ ((long) f1 ()->b1 - ((long) f1 () & 8)))
+	  *a2->b3++ = (long) f1 - ((long) f1 () & 0xff);
+	else
+	  *a2->b4++ = (long) f1;
+	for (i = 0; i < c; i++)
+	  *a2->b5++ = (long) v1;
+	foo (a1, a2);
+      }
+    }
+}