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codegen.c (gen_addsub): use mrb_int_sub_overflow().

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Yukihiro "Matz" Matsumoto
2021-09-20 17:32:38 +09:00
parent 0455313a9b
commit c29822f80c
1 changed files with 5 additions and 4 deletions
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mrbgems/mruby-compiler/core/codegen.c
+5 -4
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@@ -784,11 +784,12 @@ gen_addsub(codegen_scope *s, uint8_t op, uint16_t dst)
}
return;
}
if (op == OP_SUB) {
if (n == MRB_INT_MIN) goto normal;
n = -n;
if (op == OP_ADD) {
if (mrb_int_add_overflow(n0, n, &n)) goto normal;
}
else { /* OP_SUB */
if (mrb_int_sub_overflow(n0, n, &n)) goto normal;
}
if (mrb_int_add_overflow(n0, n, &n)) goto normal;
s->pc = addr_pc(s, data0.addr);
gen_int(s, dst, n);
}