On 8/6/2017 4:43 PM, Ken Brown wrote:
On 8/6/2017 12:59 PM, Marco Atzeri wrote:
hdf5 seems wrong to use sigsetjmp and C99 but Cygwin seems to
have a consistency issue.
I think you're right that Cygwin shouldn't declare or define sigsetjmp
under -std=c99. Here's a simple test:
$ cat test.c
#include <setjmp.h>
int
main ()
{
sigjmp_buf env;
sigsetjmp (env, 0);
}
On Cygwin:
$ gcc -std=c99 test.c
In file included from /usr/include/setjmp.h:10:0,
from test.c:1:
test.c: In function ‘main’:
test.c:7:3: error: ‘SIG_SETMASK’ undeclared (first use in this function)
sigsetjmp (env, 0);
^
On Linux:
$ gcc -std=c99 test.c
test.c: In function ‘main’:
test.c:6:3: error: unknown type name ‘sigjmp_buf’
sigjmp_buf env;
^
test.c:7:3: warning: implicit declaration of function ‘sigsetjmp’
[-Wimplicit-function-declaration]
sigsetjmp (env, 0);
I've submitted a patch
(https://cygwin.com/ml/cygwin-patches/2017-q3/msg00014.html) which makes
the behavior on Cygwin the same as on Linux.
Ken
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