[Bug libstdc++/58929] condition_variable does not wait without -pthread

[matare@fh-aachen.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58929

Victor Mataré <matare@fh-aachen.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |matare@fh-aachen.de

--- Comment #8 from Victor Mataré <matare@fh-aachen.de> ---
This has just caused me major headache because the behavior is completely
unexpected. The root problem to me seems to be that pthread_cond_wait is
defined not just in libphread, but also in libc:

# objdump -TC /lib/libc.so.6 | grep cond_wait
0014a570 g    DF .text  00000033 (GLIBC_2.0)  pthread_cond_wait
0007f5c0 g    DF .text  00000033  GLIBC_2.3.2 pthread_cond_wait

Why is that even in there? And if I apparently end up calling this
implementation, why doesn't block the way it should?