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rational.c: check integer overflow in rational_minus.

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Yukihiro "Matz" Matsumoto
2021-03-24 13:28:01 +09:00
parent 49f75703cc
commit 092bba64e7
1 changed files with 3 additions and 1 deletions
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mrbgems/mruby-rational/src/rational.c
+3 -1
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@@ -403,7 +403,9 @@ static mrb_value
rational_minus(mrb_state *mrb, mrb_value x)
{
struct mrb_rational *p = rational_ptr(mrb, x);
return rational_new(mrb, -p->numerator, p->denominator);
mrb_int n = p->numerator;
if (n == MRB_INT_MIN) rat_overflow(mrb);
return rational_new(mrb, -n, p->denominator);
}
mrb_int mrb_num_div_int(mrb_state*, mrb_int, mrb_int);