https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89454
--- Comment #1 from Qirun Zhang <qrzhang at gatech dot edu> ---
Bisect points to r151362.
commit ff79704e04af919c4fe501c7dceca8b21cced614
Author: aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Sep 3 05:24:57 2009 +0000
* toplev.c (process_options): Enable var-tracking-assignments
by default if var-tracking is enabled.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@151362
138bc75d-0d04-0410-961f-82ee72b054a4
