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, 94 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/eh/fp-regs.C b/gcc/testsuite/g++.dg/eh/fp-regs.C
new file mode 100644
index 000000000..b91c0f9a5
--- /dev/null
+++ b/gcc/testsuite/g++.dg/eh/fp-regs.C
@@ -0,0 +1,94 @@
+// PR 20670: f29 corrupted when unwind stack.  This tries to test that FP
+// registers are properly saved and restored by defining 20 different FP
+// local variables.
+// { dg-do run }
+// { dg-options "-O" }
+#include <stdlib.h>
+ 
+double zero = 0.0;
+double another_zero = 0.0;
+ 
+int
+sub (void)
+{
+  throw (0);
+}
+ 
+int
+main (void)
+{
+  double a, b, c, d, e, f, g, h, i, j;
+  double a1, b1, c1, d1, e1, f1, g1, h1, i1, j1;
+ 
+  a = zero;
+  b = a + 1;
+  c = b + 1;
+  d = c + 1;
+  e = d + 1;
+  f = e + 1;
+  g = f + 1;
+  h = g + 1;
+  i = h + 1;
+  j = i + 1;
+   
+  a1 = another_zero;
+  b1 = a1 + 1;
+  c1 = b1 + 1;
+  d1 = c1 + 1;
+  e1 = d1 + 1;
+  f1 = e1 + 1;
+  g1 = f1 + 1;
+  h1 = g1 + 1;
+  i1 = h1 + 1;
+  j1 = i1 + 1;
+   
+  try
+    {
+      sub ();
+    }
+  catch (...)
+    {
+      if (a != 0.0)
+        abort ();
+      if (b != 1.0)
+        abort ();
+      if (c != 2.0)
+        abort ();
+      if (d != 3.0)
+        abort ();
+      if (e != 4.0)
+        abort ();
+      if (f != 5.0)
+        abort ();
+      if (g != 6.0)
+        abort ();
+      if (h != 7.0)
+        abort ();
+      if (i != 8.0)
+        abort ();
+      if (j != 9.0)
+        abort ();
+ 
+      if (a1 != 0.0)
+        abort ();
+      if (b1 != 1.0)
+        abort ();
+      if (c1 != 2.0)
+        abort ();
+      if (d1 != 3.0)
+        abort ();
+      if (e1 != 4.0)
+        abort ();
+      if (f1 != 5.0)
+        abort ();
+      if (g1 != 6.0)
+        abort ();
+      if (h1 != 7.0)
+        abort ();
+      if (i1 != 8.0)
+        abort ();
+      if (j1 != 9.0)
+        abort ();
+    }
+  return 0;
+}