std::thread error

[Sebastian Huber]

On 28/09/15 23:52, Jeff Webb wrote:
> To me, it looks like this:
>
> libgcov-interface.c includes gthr.h
> gthr.h includes gthr-default.h.
> gthr-default.h includes pthread.h
> newlib/libc/include/pthread.h is found first, which does not include 
> sched.h
> after including pthread.h, gthr-default.h tries to reference sched_yield
>   i.e.: "__gthrw(sched_yield)"
> gthr-default.h then includes sched.h later in the file.
> sched.h defines sched_yield, but it is too late.
>
> Of course, I could easily be confused. 

The --enable-threads=posix is largely untested. I never used it myself. 
There is a probably a bug in the Newlib <pthread.h>, see also

  http://pubs.opengroup.org/onlinepubs/007908799/xsh/pthread.h.html

"Inclusion of the <pthread.h> header will make visible symbols defined 
in the headers <sched.h> and <time.h>."

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Sebastian Huber, embedded brains GmbH

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