http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33763
--- Comment #27 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-12 14:31:28 UTC --- (In reply to comment #25) > On Thu, 12 Jan 2012, hubicka at ucw dot cz wrote: > > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33763 > > > > --- Comment #24 from Jan Hubicka <hubicka at ucw dot cz> 2012-01-12 > > 14:22:52 UTC --- > > > OTOH, it is time to deprecate this extension and warn about it (after > > > all we miscompile this since quite some time, GCC 3.3 and 4.1 already > > > produce > > > the recursive open - how was this intended to work? ...) I don't have > > > 3.2 (and 2.95 does not have always_inline). > > > > pre cgraph compilers handled it in a way that inline body was kept after > > parsing > > extern inline version and inlined into every new parsed function until > > the offline version was reached. Then the function was marked uninlinable, > > offline body was produced and all subsequentely parsed calls was not inlined > > (including calls in the offline body). > > > > I think extern inlines are sadly rather common to be deprecated... > > Well, not deprecating extern inlines but re-definitions in the > same TU which miscompiles once the extern inline is used in that > TU (ok, so you can say in 99% of all cases that won't happen). > > Thus, another workaround would be to avoid transitioning the > attribute to the redefinition in merge_decls (under the exact > same condition as we allow the redefinition). Only a workaround for the ICE, of course, not the miscompile (can anyone check if we ever did not miscompile this case?)
