Christopher Faylor wrote:
On Tue, Feb 07, 2012 at 08:39:46PM -0600, Yaakov (Cygwin/X) wrote:
Just came across an issue with<sys/wait.h> in C++. STC:
$ cat test.c
#include<stddef.h>
#include<sys/wait.h>
int main(void) { wait(NULL); return 0; }
$ gcc -Wall test.c
$ gcc -x c++ -Wall test.c
test.c: In function ???int main()???:
test.c:2:27: error: call of overloaded ???wait(NULL)??? is ambiguous
/usr/include/sys/wait.h:37:7: note: candidates are: pid_t wait(int*)
/usr/include/sys/wait.h:82:14: note: pid_t wait(wait*)
This code compiles cleanly on Linux.
I guess we have to incorporate Linux's head-standing in
/usr/include/sys/wait.h to allow both the use of union wait * and int as
arguments to wait().
Yes. Unfortunately the typesafe approach from
http://cygwin.com/ml/cygwin-patches/2011-q4/msg00003.html
does not work with NULL (0 in C++), sorry.
Workaround: wait((int *)0) or wait((union wait *)0);
Anyone want to send a patch to cygwin-patches?
I'll do soon.
Christian
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