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| author | Yukihiro "Matz" Matsumoto <[email protected]> | 2021-08-06 10:35:06 +0900 |
|---|---|---|
| committer | Yukihiro "Matz" Matsumoto <[email protected]> | 2021-08-06 10:35:06 +0900 |
| commit | 37dbb91b9614eb287729ecf0ef10e679f6b61aa1 (patch) | |
| tree | fa71ac968d08372b5485f28a8efd50cf69188f2d /mrbgems/mruby-compiler/core/codegen.c | |
| parent | 7ecc16f97a75d0f0b1ecc0c08987f80e568b5749 (diff) | |
| download | mruby-37dbb91b9614eb287729ecf0ef10e679f6b61aa1.tar.gz mruby-37dbb91b9614eb287729ecf0ef10e679f6b61aa1.zip | |
codegen.c: `-9223372036854775808 % -1` overflows 64 bit integer.
Diffstat (limited to 'mrbgems/mruby-compiler/core/codegen.c')
| -rw-r--r-- | mrbgems/mruby-compiler/core/codegen.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/mrbgems/mruby-compiler/core/codegen.c b/mrbgems/mruby-compiler/core/codegen.c index eb53d5407..e4445c1bf 100644 --- a/mrbgems/mruby-compiler/core/codegen.c +++ b/mrbgems/mruby-compiler/core/codegen.c @@ -824,11 +824,16 @@ gen_binop(codegen_scope *s, mrb_sym op, uint16_t dst) if (!mrb_num_shift(s->mrb, n0, -n, &n)) return FALSE; } else if (op == MRB_OPSYM_2(s->mrb, mod) && n != 0) { - mrb_int n1 = n0 % n; - if ((n0 < 0) != (n < 0) && n1 != 0) { - n1 += n; + if (n0 == MRB_INT_MIN && n == -1) { + n = 0; + } + else { + mrb_int n1 = n0 % n; + if ((n0 < 0) != (n < 0) && n1 != 0) { + n1 += n; + } + n = n1; } - n = n1; } else if (op == MRB_OPSYM_2(s->mrb, and)) { n = n0 & n; |