[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 #9 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Thiago Macieira from comment #8)
> cc1plus doesn't stop in gdb, for some reason. Instead, it prints:
> 
> painting/qdrawhelper.cpp: In function ‘void
> qt_bitmapblit_quint16(QRasterBuffer*, int, int, const QRgba64&, const
> uchar*, int, int, int)’:
> painting/qdrawhelper.cpp:5753:20: internal compiler error: in
> tree_node_structure_for_code, at tree.c:508
>  inline static void qt_bitmapblit_quint16(QRasterBuffer *rasterBuffer,
>                     ^
> 
> Outside of gdb, it prints "Segmentation fault", but doesn't generate a core
> file nor does systemd-coredump catch this crash, so no postmortem debugging.
> 
> Any tricks to do that?

Yes. Just invoke cc1plus directly.
(Add -v to the gcc invocation and then copy & paste the cc1plus command
line, that is printed out.