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bigint.c (mpz_init_set_int): should avoid integer overflow.

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Check MRB_INT_MIN which could overflow by negation.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2022-07-09 17:27:27 +09:00
parent 48b43af37f
commit e157a84418
1 changed files with 2 additions and 1 deletions
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mrbgems/mruby-bigint/core/bigint.c
+2 -1
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@@ -66,7 +66,8 @@ mpz_init_set_int(mrb_state *mrb, mpz_t *y, mrb_int v)
y->p = (mp_limb*)mrb_malloc(mrb, sizeof(mp_limb)*2);
if (v < 0) {
y->sn = -1;
u = -v;
if (v == MRB_INT_MIN) u = v;
else u = -v;
}
else if (v > 0) {
y->sn = 1;