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, 31 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/compile/pr26255.c b/gcc/testsuite/gcc.c-torture/compile/pr26255.c
new file mode 100644
index 000000000..df3f0d926
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr26255.c
@@ -0,0 +1,31 @@
+typedef short int16_t;
+
+int round_sample(int *sum);
+
+#define MULS(ra, rb) ((ra) * (rb))
+
+#define SUM8(sum, op, w, p) \
+{ \
+  sum op MULS((w)[0 * 64], p[0 * 64]); \
+  sum op MULS((w)[1 * 64], p[1 * 64]); \
+  sum op MULS((w)[2 * 64], p[2 * 64]); \
+  sum op MULS((w)[3 * 64], p[3 * 64]); \
+  sum op MULS((w)[4 * 64], p[4 * 64]); \
+  sum op MULS((w)[5 * 64], p[5 * 64]); \
+  sum op MULS((w)[6 * 64], p[6 * 64]); \
+  sum op MULS((w)[7 * 64], p[7 * 64]); \
+}
+
+void foo(int *dither_state, int *samples)
+{
+  int16_t *synth_buf;
+  const int16_t *w, *p;
+  int sum;
+
+  sum = *dither_state;
+  p = synth_buf + 16;
+  SUM8(sum, +=, w, p);
+  p = synth_buf + 48;
+  SUM8(sum, -=, w + 32, p);
+  *samples = round_sample(&sum);
+}