------- Comment #15 from aoliva at gcc dot gnu dot org 2009-09-22 19:03 ------- (In reply to comment #12) > Why do you think refering to other debug stmts decl is not a good idea?
Because referring to decls already has a well-defined meaning in debug stmts, and that meaning refers to a run-time value/location arbitrarily assigned the name of the variable, rather than to the source-level value of the variable. These values may very well be different, especially if optimizations coalesced multiple variables into a single run-time location, and we move the references across modifications of the run-time location. This would get very messy in RTL, although it may not be immediately apparent in gimple, and it might even appear to work for trivial cases. But once the ambiguity hits, you lose. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41343
