https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66145
--- Comment #32 from Richard Biener <rguenth at gcc dot gnu.org> ---
Now the reverse fails - a program compiled with a GCC defaulting to the old ABI
(like GCC 4.8) now fails to run with a dual-ABI libstdc++:
#include <iostream>
#include <fstream>
using namespace std;
int main ()
{
std::ifstream pstats;
pstats.exceptions(ifstream::failbit | ifstream::badbit | ifstream::eofbit);
try {
printf("\n Opening file : /proc/0/stat ");
pstats.open("/proc/0/stat");
}
catch(ifstream::failure e)
{
printf("\n!!Caught ifstream exception!!\n");
if(pstats.is_open()) {
pstats.close();
}
}
return 0;
}
tmp> g++-4.8 t.C
tmp> ./a.out
terminate called after throwing an instance of
'std::ios_base::failure[abi:cxx11]'
what(): basic_ios::clear: iostream error
Aborted (core dumped)
tmp> LD_LIBRARY_PATH=/space/rguenther/install/gcc-6.4/lib64 ./a.out
Opening file : /proc/0/stat
!!Caught ifstream exception!!
