https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71025
Bug ID: 71025
Summary: std::call_once aborts instead of propagating an
exception (AIX 6.1)
Product: gcc
Version: 5.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: vfried at opentext dot com
Target Milestone: ---
When an exception is thrown inside a function called from std::call_once, the
process is aborted. The exception should be propagated outside std::call_once.
#include <stdio.h>
#include <mutex>
#include <stdexcept>
int main()
{
static std::once_flag flag;
printf( "start\n" );
try
{
std::call_once(
flag,
[&]()
{
throw std::runtime_error("thrown from once");
} );
}
catch ( std::runtime_error const& exc )
{
printf( "%s\n", exc.what() );
}
printf( "end\n" );
return 0;
}
bea@stbldap02:~/samples$ g++ -std=c++14 -pthread std_call_once_exception.cxx
bea@stbldap02:~/samples$ ./a.out
start
terminate called after throwing an instance of 'std::runtime_error'
what(): thrown from once
IOT/Abort trap (core dumped)
BTW: the system on which I tested it should be the same as in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67478
