Fix UB left shift of negative number
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@ -34192,7 +34192,7 @@ static int JS_WriteBigNum(BCWriterState *s, JSValueConst obj)
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e = a->expn + 3;
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else
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e = a->expn;
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e = (e << 1) | a->sign;
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e = (e * 2) | a->sign;
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if (e < INT32_MIN || e > INT32_MAX) {
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JS_ThrowInternalError(s->ctx, "bignum exponent is too large");
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return -1;
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