http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33763
--- Comment #25 from rguenther at suse dot de <rguenther at suse dot de> 2012-01-12 14:27:12 UTC --- 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). Richard.
