diff options
-rw-r--r-- | ChangeLog | 5 | ||||
-rw-r--r-- | numeric.c | 8 |
2 files changed, 9 insertions, 4 deletions
@@ -1,3 +1,8 @@ +Fri Jul 27 13:04:31 2012 Akinori MUSHA <knu@iDaemons.org> + + * numeric.c (int_pow, fix_mul): Avoid optimization bugs of + clang. Submitted by Wataru Kimura [Bug #6796]. + Fri Jun 29 21:19:36 2012 Nobuyoshi Nakada <nobu@ruby-lang.org> * eval.c (stack_extend): prevent ALLOCA_N, which reserves a memory @@ -2162,7 +2162,7 @@ fix_mul(x, y) 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 @@ -2320,9 +2320,9 @@ int_pow(x, y) 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); @@ -2332,7 +2332,7 @@ int_pow(x, y) y >>= 1; } { - long xz = x * z; + volatile long xz = x * z; if (!POSFIXABLE(xz) || xz / x != z) { goto bignum; } |