On Sep 12, 2016, Cary Coutant <ccout...@gmail.com> wrote: > In the meantime, have you seen my proposal for two-level line tables > (a prototype of which is implemented in the google/gcc-4_9 branch)?
> http://dwarfstd.org/ShowIssue.php?issue=140906.1 > http://wiki.dwarfstd.org/index.php?title=TwoLevelLineTables I hadn't. Thanks for the pointers. I reciprocate your interest :-) > At the bottom of the wiki page, I briefly mention a possible extension > to support checkpoint-based debugging, where location lists will need > to be able to refer to a logical location rather than a specific PC or > PC range. This may be relevant to your ideas -- I'm thinking your view > numbers might be similar to my logical locations. I'm still digesting the information in the proposal and trying to confirm they're roughly equivalent, or can be easily made so, but I have two related comments from a first reading of the links above: - the issue suggests referencing inlined functions by name. I'm not sure that's a very good idea, given templates, overloaded functions and whatnot. I think we'd be better off with a reference to the DW_TAG_inlined_function DIE instead. The DIE could then bring in such additional information as template parameters, function arguments and whatnot, and even identifying multiple inlined copies of the same function. - there seems to be a divergence between the issue and the wiki page WRT that very topic: where the former says "function_name" and suggests it refers to a string, the latter says "subprogram" and refers to an entry in the line number program header. -- Alexandre Oliva, freedom fighter http://FSFLA.org/~lxoliva/ You must be the change you wish to see in the world. -- Gandhi Be Free! -- http://FSFLA.org/ FSF Latin America board member Free Software Evangelist|Red Hat Brasil GNU Toolchain Engineer _______________________________________________ Dwarf-Discuss mailing list Dwarf-Discuss@lists.dwarfstd.org http://lists.dwarfstd.org/listinfo.cgi/dwarf-discuss-dwarfstd.org
