[Bug tree-optimization/46879] [4.6 Regression] ICE: in separate_decls_in_region_debug_bind, at tree-parloops.c:778 with -flto -ftree-parallelize-loops -gdwarf-3

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46879

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-12-10 15:32:40 UTC ---
(In reply to comment #2)
> Hm, well.  Then the debug machinery has to deal with type mismatches I guess.

Well, all the debug machinery cares is that the var has the original, declared
type.

> But I wonder why we have debug-stmts for global variables anyway?  I thought
> they are only used for registers.

It is not a global variable, it is a VAR_DECL with DECL_ABSTRACT_ORIGIN
PARM_DECL in bar, i.e. optimized away parameter/automatic variable.  It is a
non-localized var in main, because it is never referenced there, except for
GIMPLE_DEBUG.