[Debian-med-packaging] Bug#812011: snap: FTBFS with GCC 6: self-comparison always evaluates

[Martin Michlmayr]

Package: snap
Version: 2013-11-29-1
Severity: important
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-6

This package fails to build with GCC 6.  GCC 6 has not been released
yet, but it's expected that GCC 6 will become the default compiler for
stretch.

Note that only the first error is reported; there might be more.  You
can find a snapshot of GCC 6 in experimental.  To build with GCC 6,
you can set CC=gcc-6 CXX=g++-6 explicitly.

You may be able to find out more about this issue at
https://gcc.gnu.org/gcc-6/changes.html

> sbuild (Debian sbuild) 0.67.0 (26 Dec 2015) on dl580gen9-02.hlinux
...
> gcc -O2 -Wall -Werror -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -c -o zoeAlignment.o zoeAlignment.c
> zoeAlignment.c: In function 'zoeHSPCmpQuery':
> zoeAlignment.c:678:50: error: self-comparison always evaluates to false [-Werror=tautological-compare]
>   else if (h1->q_start > h2->q_start && h2->q_end > h2->q_end) return  1;
>                                                   ^
> 
> zoeAlignment.c: In function 'zoeHSPCmpSbjct':
> zoeAlignment.c:684:50: error: self-comparison always evaluates to false [-Werror=tautological-compare]
>   else if (h1->s_start > h2->s_start && h2->s_end > h2->s_end) return  1;
>                                                   ^
> 
> cc1: all warnings being treated as errors
> Makefile:110: recipe for target 'zoeAlignment.o' failed

-- 
Martin Michlmayr
Linux for HPE Helion, Hewlett Packard Enterprise