https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69319
Bug ID: 69319
Summary: Suspect compiler bug
Product: gcc
Version: 5.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: freddy77 at gmail dot com
Target Milestone: ---
Created attachment 37374
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37374&action=edit
test program, single C file with only system includes
Hi, I found a strange problem with optimized code.
The code uses an hand written dynamic double linked list (circular).
There are some trick to make see the list as an item of the list.
After some work I manage to get a small test program.
I don't really understand why this specific code crash.
Trying to read the assembly code (x86_64) looks like the compiler is assuming
some value on first iteration of the a "check" loop causing an assertion to
fail.
I tested the program with Ubuntu 15.10 compiler (5.2.1) and a Fedora 22
(5.3.1), all x86_64.
Test program is really small. I manage to get a single C file only with system
includes.
