[Bug pch/63319] [5 Regression] ICE: Segmentation fault building qt5 with pch

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63319

--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
valgrind --track-origins=yes --trace-children=yes g++ ...
will probably also print a backtrace.