UGLOBAL is not "undefined global". Variables with SCLASS_UGLOBAL will be placed into .bss section and initialized to zero by loader. This can reduce the object file size.
2010/8/9 Sun Chan <sun.c...@gmail.com>: > Folks, > > Someone asked me this question and I'm not sure I know the exact > reason why. May be someone can help. > > In wfe_decl.cxx, function > static void > Add_Inito_For_Tree (tree init, tree decl, ST *st) > > The symbol, if initiailzed by user to zero, FE will change the storage > class to undefined global. Why? > > Thx in advance. > > Sun > > Here is the code inside that function: > > Set_ST_init_value_zero(st); > if (ST_sclass(st) == SCLASS_DGLOBAL) > Set_ST_sclass(st, SCLASS_UGLOBAL); > return; > } > #endif > aggregate_inito = New_INITO (st); > not_at_root = FALSE; > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by > > Make an app they can't live without > Enter the BlackBerry Developer Challenge > http://p.sf.net/sfu/RIM-dev2dev > _______________________________________________ > Open64-devel mailing list > Open64-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/open64-devel > -- Regards, Lai Jian-Xin ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Open64-devel mailing list Open64-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/open64-devel
