popen/pclose: unexpected behavior
John O\'Leary
joleary@ichips.intel.com
Mon Oct 3 18:52:00 GMT 2005
Hello,
The following program hangs when its pipes are closed in the same order in
which they were opened, and terminates when its pipes are closed in the
reverse order.
I've never seen this on other platforms - it a bug? Or is there a subtlety I'm
unaware of?
Thanks
--John
----------------------------------------
#include <stdio.h>
int main (void)
{
FILE *pipe1;
FILE *pipe2;
pipe1 = popen ("cat", "w");
pipe2 = popen ("cat", "w");
/* hangs unless pipes are pclosed in order pipe2,pipe1 */
pclose (pipe1);
pclose (pipe2);
return 0;
}
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