https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114753
Bug ID: 114753
Summary: from_chars aborts with -m32 -ftrapv when passed
-9223372036854775808
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gnu.ojxq8 at dralias dot com
Target Milestone: ---
std::from_chars may abort when used with -m32 -ftrapv on some values.
Without -m32, or without -ftrapv, or using clang, the code works correctly.
To reproduce:
$ cat a.cpp
#include <charconv>
#include <cstdint>
#include <string_view>
int main() {
int64_t result{};
std::string_view str{"-9223372036854775808"};
(void)std::from_chars(str.begin(), str.end(), result);
return result != -9223372036854775807 - 1;
}
$ g++ -m32 -ftrapv -std=c++17 ./a.cpp && ./a.out
Aborted (core dumped)
