Clang segfaults when outputting endl

Question

I am trying out Clang (version 3.4, via the Windows pre-built binaries) to see if it could be a suitable replacement for GCC (version 4.8.1, using MinGW); however, I am unable to get a simple program to work.

#include <iostream>

int main()
{
    std::cout << std::endl;
}

Clang is able to compile and link the program, but running it results in a SIGSEGV signal and a return code of 0xC0000005. Outputting a string works fine, but std::flush causes the same result, though allowing the stream to automatically flush itself is okay.

Debugging the program just shows a call stack containing __mingw_CRTStartup() (Clang is using libstdc++, as it didn't install libc++) and std::cout (). What might be causing this, and how could it be fixed?

edit: The same thing happens when using other ostream manipulators such as std::dec and std::unitbuf.

Answer 1

There's a bug pending for LLVM 3.4 regarding a similar issue. The problem seems an ABI incompatibility between LLVM 3.4 and MinGW 4.7+ that causes i686 instructions to be picked up instead of the selected target.

A possible solution on x64 Windows is to use a MinGW64 build. That should work but getting the standard library headers right could be tricky.

A recommended solution is to follow the steps here, adjust targets and any path on your system and get it to compile.