------- Comment #4 from manu at gcc dot gnu dot org 2010-06-21 16:51 ------- (In reply to comment #3) > (In reply to comment #1) > > (In reply to comment #0) > > > The following program compiles with g++ -O3 without errors or warnings > > > > Not with warnings enabled it doesn't! > > > > Sorry, > > g++ -O3 -Wall -Wextra switch-crash.cpp gives: > > switch-crash.cpp: In function int f(int): > switch-crash.cpp:6: warning: unused variable x > switch-crash.cpp:10: warning: no return statement in function returning > non-void
If you add return 0 after the printf, this warning is silenced and it still crashes (it crashes for me even at -O0). > switch-crash.cpp:7: warning: saved_stack.1 is used uninitialized in this > function > > The saved_stack.1 is somewhat suspicious. It is a bug anyway, because internal variables should never be warned. -- manu at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2010-06-21 16:51:06 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44613