Relevant package versions (all the current latest):
* Cygwin: 3.1.4
* binutils: 2.43+1git.de9c1b7cfe-1
* gcc-core, gcc-g++, libgcc1, libstdc++6: 9.3.0-1
Sample program (foo.cc):
#include <iostream>
using namespace std;
int
main(void)
{
cout << "OK" << endl;
return 0;
}
With a plain g++ foo.cc -o foo, I get a foo.exe that prints "OK".
However, with g++ -gdwarf-5 -Og foo.cc -o foo, I get a binary that reports
-bash: ./foo.exe: cannot execute binary file: Exec format error
when run.
GDB can load the binary and show symbols just fine, but trying to run results
in:
Error creating process /cygdrive/.../foo.exe, (error 193).
Using -gdwarf-4 instead of -gdwarf-5 or dropping -Og makes the problem go away.
It also seems to be c++-specific; a C version of the sample program resulted in
a working program
(could just be because a C++ program with iostream pulls in more, triggering
the issue).
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