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Fix UB left shift of negative number

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Ben Noordhuis 2023-11-01 06:53:16 +01:00
parent 3bb2ca360e
commit 8df4327559
1 changed files with 1 additions and 1 deletions
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quickjs.c
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@ -34907,7 +34907,7 @@ static int JS_WriteBigNum(BCWriterState *s, JSValueConst obj)
e = a->expn + 3; e = a->expn + 3;
else else
e = a->expn; e = a->expn;
e = (e << 1) | a->sign; e = (e * 2) | a->sign;
if (e < INT32_MIN || e > INT32_MAX) { if (e < INT32_MIN || e > INT32_MAX) {
JS_ThrowInternalError(s->ctx, "bignum exponent is too large"); JS_ThrowInternalError(s->ctx, "bignum exponent is too large");
return -1; return -1;