[Bug pch/71622] gcc 5.3.1 crashes when it tries to compile qtbase [dev]

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71622

--- Comment #15 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
All these bogus valgrind warnings can be suppressed if you configure gcc
with --enable-valgrind-annotations.