Can I get a sigint when the bash window closed with close window's button ?

[Joe Smith]

"Igor Pechtchanski" <pechtcha@cs.nyu.edu> wrote in message 
news:Pine.GSO.4.63.0511151424250.15491@slinky.cs.nyu.edu...
> On Tue, 15 Nov 2005, Konrad Eisele wrote:
>
>> When th cygwin bash window is closed by clicking on the window's close
>> button the the appliaction gets killed without recieving a sigint or any
>> atexit called. Is there a way to be able to run cleanup code when the
>> application is about to be killed?
>
> According to exceptions.cc, a SIGHUP will be sent to bash in this case.
> Are you handling the right signal?
>
> BTW, the atexit() callback also should be called -- do you have a simple
> testcase to reproduce the problem?
> Igor

I know nothing about signals, but this program when run inside bash does not 
seem to run callback() *ever*.
^c does not run it. Closing the bash window does not run it. But if you 
remove the loop then it *is* run.

#include <stdio.h>
void callback()
{
  FILE *current;

 current=fopen("test.txt","a");
 fprintf(current,"atexit");
}

int main()
{
  atexit(*callback);
  while(1)
  {};
} 



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