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, 23 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/uninit-16.c b/gcc/testsuite/gcc.dg/uninit-16.c
new file mode 100644
index 000000000..e039f7026
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/uninit-16.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -Wuninitialized" } */
+
+int foo, bar;
+
+static
+void decode_reloc(int reloc, int *is_alt)
+{
+  if (reloc >= 20)
+      *is_alt = 1;
+  else if (reloc >= 10)
+      *is_alt = 0;
+}
+
+void testfunc()
+{
+  int alt_reloc;
+
+  decode_reloc(foo, &alt_reloc);
+
+  if (alt_reloc) /* { dg-warning "may be used uninitialized" } */
+    bar = 42;
+}