https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70531
Bug ID: 70531
Summary: Turning optimisation level 2 causes the output program
to go into infinite loop
Product: gcc
Version: 5.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: iliyabo at hotmail dot com
Target Milestone: ---
Created attachment 38176
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38176&action=edit
Source file causing the bug
While solving algorithm problems, I stumbled on a problem which I think is a
bug within the g++ compiler. You can see the source code in the attachment. If
I compile with g++ $(srcfile) -o output, the resulting executable works as
expected. But when I turn optimisations (-O2), resulting executable goes into
infinite loop and I must terminate it. This behaviour doesn't happen if I try
to use clang++ (both with optimisation on and off). I am using fedora 23 with
g++ version 5.3.1. If you need anything else, tell me.
