[PATCH] fix gcc -std=c89 in <sys/signal.h>

[Yaakov (Cygwin/X)]

On latest Cygwin:

$ echo "#include <sys/signal.h>" > test.c
$ gcc -c test.c
$ gcc -c -std=c89 test.c
In file included from /usr/include/sys/signal.h:107,
                   from test.c:1:
/usr/include/cygwin/signal.h:74: error: expected 
specifier-qualifier-list before 'pthread_attr_t'
/usr/include/cygwin/signal.h:80: error: expected 
specifier-qualifier-list before '__uint32_t'
/usr/include/cygwin/signal.h:96: error: expected 
specifier-qualifier-list before 'pid_t'
/usr/include/cygwin/signal.h:270: error: expected ')' before 'int'
In file included from test.c:1:
/usr/include/sys/signal.h:152: error: expected ')' before 'int'

The problem is that both <cygwin/signal.h> and an (__CYGWIN__ || 
__rtems__) section of <sys/signal.h> need those typedefs from 
<sys/types.h>, but the latter is only #include'd #ifdef _POSIX_THREADS, 
which is off in C89 mode.

Patch attached.


Yaakov
Cygwin/X

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