merges r31822 and r31823 from trunk into ruby_1_9_2.

--
* insns.def (opt_mult): as r31805, volatile it.
  Without this, clang -O fails calculation.

* numeric.c (fix_mul): ditto.

* rational.c (f_imul): ditto.
--
Fix mixed declarations in r31822.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31844 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/numeric.c b/numeric.c
index 203bef9c65..40629f56b6 100644
--- a/numeric.c
+++ b/numeric.c
@@ -2322,7 +2322,7 @@ fix_mul(VALUE x, VALUE y)
 #if SIZEOF_LONG * 2 <= SIZEOF_LONG_LONG
 	LONG_LONG d;
 #else
-	long c;
+	volatile long c;
 	VALUE r;
 #endif