[Bug c++/53493] [4.7 regression] Compiling with -Os excludes PROGMEM array from generated object file (__attribute__((__progmem__)))

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53493

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-05-26 
17:21:38 UTC ---
Can you provide the preprocessed source?

I think this is done on purpose since foo is not used in the source and the
rules for C++ say the const variable has vague linkage GCC can (and will)
remove those variables which are not used.