[Patch, libfortran] Multi-threaded random_number

[Rainer Orth]

Hi Janne,

> committed a slightly modified patch as r239356. Changes from the
> submitted patch attached. To my surprise, it turned out that my
> fallback code using __gthread_key_{create,delete} and
> __ghtread_{get,set}_specific was faster than my TLS code, so I removed
> the TLS configure magic and the TLS code and just left the __gthread
> stuff in.

this patch broke Solaris bootstrap:

/vol/gcc/src/hg/trunk/local/libgfortran/intrinsics/random.c: In function 'constructor_random':
/vol/gcc/src/hg/trunk/local/libgfortran/intrinsics/
random.c:915:45: error: 'free' undeclared (first use in this function); did you mean 'frexp'?
     __gthread_key_create (&rand_state_key, &free);
                                             ^~~~
                                             frexp
/vol/gcc/src/hg/trunk/local/libgfortran/intrinsics/random.c:915:45: note: each undeclared identifier is reported only once for each function it appears in

You need to include <stdlib.h> for the free declaration, as this patch
does.  Allowed i386-pc-solaris2.12 and sparc-sun-solaris2.12 to
continue.  I'm going to install this as obvious.

	Rainer


2016-08-11  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	libgfortran:
	* intrinsics/random.c: Include <stdlib.h>.

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Rainer Orth, Center for Biotechnology, Bielefeld University