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Fix mrb_int_mul_overflow() to check either operand being zero.

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2020-09-07 16:22:01 +09:00
parent 4dcc1819c9
commit 3ff2757bf7
2 changed files with 5 additions and 5 deletions
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include/mruby/numeric.h
+3 -3
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@@ -136,15 +136,15 @@ mrb_int_mul_overflow(mrb_int multiplier, mrb_int multiplicand, mrb_int *product)
if (multiplicand > 0) {
if (multiplier > MRB_INT_MAX / multiplicand) return TRUE;
}
else {
else if (multiplicand < 0) {
if (multiplicand < MRB_INT_MAX / multiplier) return TRUE;
}
}
else {
else if (multiplier < 0) {
if (multiplicand > 0) {
if (multiplier < MRB_INT_MAX / multiplicand) return TRUE;
}
else {
else if (multiplicand < 0) {
if (multiplier != 0 && multiplicand < MRB_INT_MAX / multiplier) return TRUE;
}
}