From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001
From: upstream source tree <ports@midipix.org>
Date: Sun, 15 Mar 2015 20:14:05 -0400
Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; 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.
---
 gcc/testsuite/gcc.c-torture/execute/pr31169.c | 51 +++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 gcc/testsuite/gcc.c-torture/execute/pr31169.c

(limited to 'gcc/testsuite/gcc.c-torture/execute/pr31169.c')

diff --git a/gcc/testsuite/gcc.c-torture/execute/pr31169.c b/gcc/testsuite/gcc.c-torture/execute/pr31169.c
new file mode 100644
index 000000000..447dd4588
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr31169.c
@@ -0,0 +1,51 @@
+extern void abort();
+
+#define HOST_WIDE_INT long
+#define HOST_BITS_PER_WIDE_INT (sizeof(long)*8)
+
+struct tree_type
+{
+  unsigned int precision : 9;
+};
+
+int
+sign_bit_p (struct tree_type *t, HOST_WIDE_INT val_hi, unsigned HOST_WIDE_INT val_lo)
+{
+  unsigned HOST_WIDE_INT mask_lo, lo;
+  HOST_WIDE_INT mask_hi, hi;
+  int width = t->precision;
+
+  if (width > HOST_BITS_PER_WIDE_INT)
+    {
+      hi = (unsigned HOST_WIDE_INT) 1 << (width - HOST_BITS_PER_WIDE_INT - 1);
+      lo = 0;
+
+      mask_hi = ((unsigned HOST_WIDE_INT) -1
+                 >> (2 * HOST_BITS_PER_WIDE_INT - width));
+      mask_lo = -1;
+    }
+  else
+    {
+      hi = 0;
+      lo = (unsigned HOST_WIDE_INT) 1 << (width - 1);
+    
+      mask_hi = 0;
+      mask_lo = ((unsigned HOST_WIDE_INT) -1
+                 >> (HOST_BITS_PER_WIDE_INT - width));
+    }
+
+  if ((val_hi & mask_hi) == hi
+      && (val_lo & mask_lo) == lo)
+    return 1;
+
+  return 0;
+}
+
+int main()
+{
+  struct tree_type t;
+  t.precision = 1;
+  if (!sign_bit_p (&t, 0, -1))
+    abort ();
+  return 0;
+}
-- 
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