casa-mp-base

--- numeric.c.orig  2011-12-10 21:17:27.000000000 +0900

+++ numeric.c   2012-07-21 15:40:51.000000000 +0900

@@ -2161,7 +2161,7 @@

     VALUE x, y;

 {

     if (FIXNUM_P(y)) {

-#ifdef __HP_cc

+#if defined(__HP_cc) || defined(__clang__)

         /* avoids an optimization bug of HP aC++/ANSI C B3910B A.06.05 [Jul 25 2005] */

         volatile

 #endif

@@ -2319,9 +2319,9 @@

     y &= ~1;

     do {

    while (y % 2 == 0) {

-       long x2 = x * x;

+       volatile long x2 = x * x;

        if (x2/x != x || !POSFIXABLE(x2)) {

-       VALUE v;

+       volatile VALUE v;

          bignum:

        v = rb_big_pow(rb_int2big(x), LONG2NUM(y));

        if (z != 1) v = rb_big_mul(rb_int2big(neg ? -z : z), v);

@@ -2331,7 +2331,7 @@

        y >>= 1;

    }

    {

-       long xz = x * z;

+       volatile long xz = x * z;

        if (!POSFIXABLE(xz) || xz / x != z) {

        goto bignum;

        }