[Bug middle-end/52306] ICE in CSE

[tg at mirbsd dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52306

--- Comment #7 from Thorsten Glaser <tg at mirbsd dot org> 2012-12-04 12:58:35 UTC ---
Created attachment 28876
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28876
preprocessed source of second kde4libs occurrence

OK. I found another one in the meantime, which I added. It can be triggered
thus:

ara3:~# gcc -x c++ -g -fPIC -ansi -fno-exceptions -fno-check-new -fno-common
-fno-threadsafe-statics -O2 -c kstatusnotifieritem.i
../../kdeui/notifications/kstatusnotifieritem.cpp: In member function
'KDbusImageVector KStatusNotifierItemPrivate::iconToVector(const QIcon&)':
../../kdeui/notifications/kstatusnotifieritem.cpp:1037:1: internal compiler
error: in cselib_record_set, at cselib.c:2158
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions.
Preprocessed source stored into /tmp/cc8gGDaq.out file, please attach this to
your bugreport.

(I’ve just attached the .i file, they’re virtually identical save for
newlines.)

The set of compiler options is not minimal, but just -O2 -g -fPIC wasn’t
enough. Appending -O1 solves it.