1506024 - fix*stack*.py should only change symbol names

Status: NEW

(Testing :: General, enhancement, P3)

Description

[Mike Hommey [:glandium]]

Given something like

  #1: ??? [libxul.so+0xoffset]

(or many other possibilities of output from MozStackWalk)

The fix*stack*py scripts are essentially replacing everything that follows the colon.

This made for an awkward moment when I was doing some attempts to change the output from MozStackWalk itself, when I modified it to add the program counter value, like:

  #1: 0x.... ??? [libxul.so+0xoffset]

but only saw

  #1: symbol [source:line]

in my logs, with my addition entirely gone without an explanation.

Relatedly, all those scripts should share their line parsing code.