#!/usr/bin/perl -i## This script converts all numbers that look like addresses or memory sizes,# in a debug files generated by --debug (like mysqld --debug), to #.# The script also deletes all thread id's from the start of the line.# This allows you to easily compare the files (for example with diff)# to find out what changes between different executions.# This is extremely useful for comparing two mysqld versions to see# why things now work differently.# The script converts the files in place.## Typical usage:## convert-debug-for-diff /tmp/mysqld.trace /tmp/mysqld-old.trace# diff /tmp/mysqld.trace /tmp/mysqld-old.tracewhile(<>){