https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84044
--- Comment #8 from Jan Hubicka <hubicka at ucw dot cz> --- > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84044 > > --- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> --- > On Fri, 26 Jan 2018, marxin at gcc dot gnu.org wrote: > > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84044 > > > > --- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> --- > > (In reply to Richard Biener from comment #4) > > > (In reply to Martin Liška from comment #3) > > > > Fixed on trunk by Richi's r256685. Is it intentional Richi that the > > > > revision > > > > should fix such situations? > > > > > > Not really. It means that the following hunk removes too many TYPE_BINFOs > > > I guess? > > > > > > @@ -5150,15 +5145,9 @@ free_lang_data_in_type (tree type) > > > { > > > free_lang_data_in_binfo (TYPE_BINFO (type)); > > > /* We need to preserve link to bases and virtual table for all > > > - polymorphic types to make devirtualization machinery working. > > > - Debug output cares only about bases, but output also > > > - virtual table pointers so merging of -fdevirtualize and > > > - -fno-devirtualize units is easier. */ > > > - if ((!BINFO_VTABLE (TYPE_BINFO (type)) > > > - || !flag_devirtualize) > > > - && ((!BINFO_N_BASE_BINFOS (TYPE_BINFO (type)) > > > - && !BINFO_VTABLE (TYPE_BINFO (type))) > > > - || debug_info_level != DINFO_LEVEL_NONE)) > > > + polymorphic types to make devirtualization machinery > > > working. > > > */ > > > + if (!BINFO_VTABLE (TYPE_BINFO (type)) > > > + || !flag_devirtualize) > > > TYPE_BINFO (type) = NULL; > > > } > > > } > > > > Reverting this hunk makes the warning visible again. > > Interesting. This means that with -g it didn't warn before either? > Which means that maybe unconditionally > > && !BINFO_N_BASE_BINFOS (TYPE_BINFO (type)) > > was intented? Honza? Yep that was my tought exactly, but I want to take deeper look what we really use and what not. Honza > > -- > You are receiving this mail because: > You are on the CC list for the bug.
