diff options
Diffstat (limited to 'libstdc++-v3/src/c++17')
-rw-r--r-- | libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES | 1 | ||||
-rw-r--r-- | libstdc++-v3/src/c++17/fast_float/fast_float.h | 9 |
2 files changed, 10 insertions, 0 deletions
diff --git a/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES b/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES index ad5a60f9a01..71495d6728b 100644 --- a/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES +++ b/libstdc++-v3/src/c++17/fast_float/LOCAL_PATCHES @@ -1 +1,2 @@ r12-6647 +r12-6648 diff --git a/libstdc++-v3/src/c++17/fast_float/fast_float.h b/libstdc++-v3/src/c++17/fast_float/fast_float.h index c908719ec3a..97d28940944 100644 --- a/libstdc++-v3/src/c++17/fast_float/fast_float.h +++ b/libstdc++-v3/src/c++17/fast_float/fast_float.h @@ -2884,6 +2884,15 @@ from_chars_result from_chars_advanced(const char *first, const char *last, // If we called compute_float<binary_format<T>>(pns.exponent, pns.mantissa) and we have an invalid power (am.power2 < 0), // then we need to go the long way around again. This is very uncommon. if(am.power2 < 0) { am = digit_comp<T>(pns, am); } + + if((pns.mantissa != 0 && am.mantissa == 0 && am.power2 == 0) || am.power2 == binary_format<T>::infinite_power()) { + // In case of over/underflow, return result_out_of_range and don't modify value, + // as per [charconv.from.chars]/1. Note that LWG 3081 wants to modify value in + // this case too. + answer.ec = std::errc::result_out_of_range; + return answer; + } + to_float(pns.negative, am, value); return answer; } |