using trap to catch segfault

#!/bin/bash
trap 'if [[ $? -eq 139 ]]; then echo "segfault !"; fi' CHLD

count=0

while :
 do
   sleep 1
   count=$(expr $count + 1)
   echo $count
   ./code >& log
   if [ "$?" -ne 139 ]
        then
                exit
   fi
 done