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Merge pull request #7370 from kalsprite/base_prefix_digit_count

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big_int: a base prefix with only digit separators has no digits
This commit is contained in:
Jeroen van Rijn
2026-08-19 20:43:00 +02:00
committed by GitHub
parent 7a6f70ba31 c580e1af93
commit 2c3a7f4502
1 changed files with 8 additions and 0 deletions
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8
src/big_int.cpp
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@@ -218,6 +218,7 @@ gb_internal void big_int_from_string(BigInt *dst, String const &s, bool *success
defer (big_int_dealloc(&digit));
isize i = 0;
isize digit_count = 0;
for (; i < len; i++) {
Rune r = cast(Rune)text[i];
@@ -241,12 +242,19 @@ gb_internal void big_int_from_string(BigInt *dst, String const &s, bool *success
*success = false;
}
break;
} else {
digit_count += 1;
}
big_int_from_u64(&digit, v);
big_int_mul_eq(dst, &b);
big_int_add_eq(dst, &digit);
}
if (digit_count == 0) {
// a base prefix with only digit separators after it, `0x_`, has no digits at all
*success = false;
return;
}
if (i < len && (text[i] == 'e' || text[i] == 'E')) {
i += 1;
if (base != 10) {