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      1 /* This program is intended to be started outside of gdb, and then
      2    attached to by gdb.  Thus, it simply spins in a loop.  The loop
      3    is exited when & if the variable 'should_exit' is non-zero.  (It
      4    is initialized to zero in this program, so the loop will never
      5    exit unless/until gdb sets the variable to non-zero.)
      6    */
      7 #include <stdio.h>
      8 #include <stdlib.h>
      9 #include <unistd.h>
     10 
     11 double  bidule = 0.0;
     12 volatile int  should_exit = 0;
     13 
     14 int main ()
     15 {
     16   int  local_i = 0;
     17 
     18   sleep( 60 ); /* System call causes register fetch to fail */
     19                /* This is a known HPUX "feature"            */
     20   while (! should_exit)
     21     {
     22       local_i++;
     23     }
     24   return (0);
     25 }
     26