diff options
| author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-04-09 11:39:53 +0000 |
|---|---|---|
| committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-04-09 11:39:53 +0000 |
| commit | 712c7168bf55f61df33efa2a7552e4b3c25b306c (patch) | |
| tree | a8f7e877849ffca9db3de17e3fe783d367f25933 /internal.h | |
| parent | 4329b14cfbe4c91561c12ba7d1b40c66faea30b5 (diff) | |
* internal.h (MUL_OVERFLOW_SIGNED_INTEGER_P): New macro.
(MUL_OVERFLOW_FIXNUM_P): Ditto.
(MUL_OVERFLOW_LONG_P): Ditto.
* array.c (rb_ary_product): Don't overflow on signed integer
multiplication.
* numeric.c (fix_mul): Ditto.
(int_pow): Ditto.
* rational.c (f_imul): Ditto.
* insns.def (opt_mult): Ditto.
* thread.c (sleep_timeval): Don't overflow on signed integer addition.
* bignum.c (rb_int2big): Don't overflow on signed integer negation.
(rb_big2ulong): Ditto.
(rb_big2long): Ditto.
(rb_big2ull): Ditto.
(rb_big2ll): Ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40208 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'internal.h')
| -rw-r--r-- | internal.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/internal.h b/internal.h index b832a95c89..5e9ce2460a 100644 --- a/internal.h +++ b/internal.h @@ -28,6 +28,15 @@ extern "C" { #endif #define TIMET_MAX_PLUS_ONE (2*(double)(TIMET_MAX/2+1)) +#define MUL_OVERFLOW_SIGNED_INTEGER_P(a, b, min, max) ( \ + (a) == 0 ? 0 : \ + (a) == -1 ? (b) < -(max) : \ + (a) > 0 ? \ + ((b) > 0 ? (max) / (a) < (b) : (min) / (a) > (b)) : \ + ((b) > 0 ? (min) / (a) < (b) : (max) / (a) > (b))) +#define MUL_OVERFLOW_FIXNUM_P(a, b) MUL_OVERFLOW_SIGNED_INTEGER_P(a, b, FIXNUM_MIN, FIXNUM_MAX) +#define MUL_OVERFLOW_LONG_P(a, b) MUL_OVERFLOW_SIGNED_INTEGER_P(a, b, LONG_MIN, LONG_MAX) + struct rb_deprecated_classext_struct { char conflict[sizeof(VALUE) * 3]; }; |