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as/lexer/number.c: should not stop parsing if we overflow.

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Henrik Hautakoski 2019-04-03 16:45:53 +02:00
parent 502f284ebd
commit a105d5087e
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GPG key ID: 839F3A7EAFAEAFAA
1 changed files with 9 additions and 3 deletions
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12
as/lexer/number.c
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@ -55,10 +55,16 @@ int lexer_read_num_dec(FILE *fp, int neg, int *out) {
int c, val = 0, oflow = 0; int c, val = 0, oflow = 0;
while((c = fgetc(fp)) != EOF) { while((c = fgetc(fp)) != EOF) {
if (!lexer_is_num(c)) { if (!lexer_is_num(c)) {
ungetc(c, fp); ungetc(c, fp);
break; break;
} }
// Ignore if we have overflowed, but keep reading all numbers.
if (oflow)
continue;
val = (val * 10) + (c - '0'); val = (val * 10) + (c - '0');
// Cool trick here. // Cool trick here.
@ -67,10 +73,10 @@ int lexer_read_num_dec(FILE *fp, int neg, int *out) {
if (val > (0x80 - !neg)) { if (val > (0x80 - !neg)) {
// Truncate value. // Truncate value.
val = 0x80 - !neg; val = 0x80 - !neg;
oflow = 1;
break;
}
// Set overflow flag.
oflow = 1;
}
} }
*out = neg ? -1 * val : val; *out = neg ? -1 * val : val;