[Bug c++/54972] O2 breaks something in 4.6.3

[schwab@linux-m68k.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54972

--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> 2012-10-18 11:25:00 UTC ---
lzo_gcc_test.cpp: In function ‘int main(int, char**)’:
lzo_gcc_test.cpp:44:44: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
lzo_gcc_test.cpp:59:17: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]