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Fix handling of leading zeros

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This commit is contained in:
Maya Warrier 2023-12-13 17:11:41 -05:00
parent 30b3165520
commit 36aaded3dd
1 changed files with 15 additions and 2 deletions
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17
include/fast_float/ascii_number.h
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@ -463,6 +463,12 @@ from_chars_result_t<UC> parse_int_string(UC const* p, UC const* pend, T& value,
++p;
}
UC const* const start_num = p;
while (*p == UC('0')) {
++p;
}
const bool has_leading_zeros = p > start_num;
UC const* const start_digits = p;
uint64_t i = 0;
@ -478,8 +484,15 @@ from_chars_result_t<UC> parse_int_string(UC const* p, UC const* pend, T& value,
size_t digit_count = size_t(p - start_digits);
if (digit_count == 0) {
answer.ec = std::errc::invalid_argument;
answer.ptr = first;
if (has_leading_zeros) {
value = 0;
answer.ec = std::errc();
answer.ptr = p;
}
else {
answer.ec = std::errc::invalid_argument;
answer.ptr = first;
}
return answer;
}