https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91012
Bug ID: 91012
Summary: filesystem_error no longer includes error_code message
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: bhalevy at gmail dot com
CC: redi at gcc dot gnu.org
Target Milestone: ---
std::filesystem::filesystem_error::what() changed in version 9 as follows.
test_fse.cc:
#include <iostream>
#include <system_error>
#include <filesystem>
int main()
{
auto fse = std::filesystem::filesystem_error("op failed",
std::error_code(13, std::system_category()));
std::cout << "filesystem_error: " << fse.what() << '\n';
}
compile options:
g++ -std=c++17 -o test_fse test_fse.cc -lstdc++fs
Previously, with libstd++fs version 8, the output looks like this:
filesystem_error: filesystem error: op failed: Permission denied
Now, with libstd++fs version 9:
filesystem_error: filesystem error: op failed
I think the culprit is commit 8092d42a27bb2a8c45d8219b95532e92ffa152ac
"PR libstdc++/83306 make filesystem_error no-throw copyable"
Therefore adding Jonathan to the Cc.
