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Overflow test optimization suggested by kugelfuhr

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User CHAR_BIT instead of 8
This commit is contained in:
bbbradsmith 2023-05-04 05:44:20 -04:00
parent b5f255f912
commit ca8201a314
1 changed files with 3 additions and 7 deletions
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10
src/cc65/scanner.c
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@ -590,19 +590,15 @@ static void NumericConst (void)
SB_Clear (&Src);
break;
}
if (((scan_t)(IVal * Base) / Base) != IVal) {
if (((scan_t)(IVal * Base + DigitVal) / Base) != IVal) {
Overflow = 1;
}
IVal = IVal * Base;
if (((scan_t)(IVal + DigitVal)) < IVal) {
Overflow = 1;
}
IVal += DigitVal;
IVal = IVal * Base + DigitVal;
SB_Skip (&Src);
}
if (Overflow) {
Error ("Numerical constant \"%s\" too large for internal %d-bit representation",
SB_GetConstBuf (&Src), (int)(sizeof(IVal)*8));
SB_GetConstBuf (&Src), (int)(sizeof(IVal)*CHAR_BIT));
}
/* Distinguish between integer and floating point constants */