https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #16 from GCC Commits ---
The master branch has been updated by Jonathan Wakely :
https://gcc.gnu.org/g:9f3eb93e72703f6ea30aa27d0b6fc6db62cb4a04
commit r14-6942-g9f3eb93e72703f6ea30aa27d0b6fc6db62cb4a04
Author: Jonathan Wakely
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #15 from Jonathan Wakely ---
(In reply to Jonathan Wakely from comment #8)
> (In reply to Peter Dimov from comment #7)
> > You don't necessarily need dynamic_cast because facets are always installed
> > and obtained by their exact
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
Jonathan Wakely changed:
What|Removed |Added
Resolution|--- |FIXED
Status|UNCONFIRMED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #13 from andysem at mail dot ru ---
(In reply to Jonathan Wakely from comment #12)
> (In reply to andysem from comment #11)
> > > I'm not sure what you mean by "the compiler is free to generate code that
> > > takes it into
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #12 from Jonathan Wakely ---
(In reply to andysem from comment #11)
> > I'm not sure what you mean by "the compiler is free to generate code that
> > takes it into account." Takes what into account? What problem does that
> >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #11 from andysem at mail dot ru ---
> I'm not sure what you mean by "the compiler is free to generate code that
> takes it into account." Takes what into account? What problem does that
> freedom cause?
I mean the compiler could
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #10 from Peter Dimov ---
Maybe the right thing to do is to use dynamic_cast only for virtual inheritance
(either have a trait or check whether static_cast isn't a valid expression),
otherwise static_cast, in both cases (standard and
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #9 from Jonathan Wakely ---
(In reply to Jonathan Wakely from comment #8)
> (In reply to Peter Dimov from comment #7)
> > You don't necessarily need dynamic_cast because facets are always installed
> > and obtained by their exact
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #8 from Jonathan Wakely ---
(In reply to Peter Dimov from comment #7)
> You don't necessarily need dynamic_cast because facets are always installed
> and obtained by their exact type, not via a reference to base.
Is that true?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #7 from Peter Dimov ---
You don't necessarily need dynamic_cast because facets are always installed and
obtained by their exact type, not via a reference to base. You can store the
Facet* as given (like shared_ptr does), and return
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #6 from Jonathan Wakely ---
(In reply to andysem from comment #3)
> I think, a failing dynamic_cast would not be useful as this would make
> std::use_facet unusable with -fno-rtti.
I don't see a problem with that. If you want to
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #5 from Jonathan Wakely ---
I'm not sure what you mean by "the compiler is free to generate code that takes
it into account." Takes what into account? What problem does that freedom
cause?
The locale facet instantiations are
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #4 from andysem at mail dot ru ---
> It's mostly OK to mix code with -frtti and -fno-rtti, but sometimes it bites
> you.
Note that in this case, it is the standard library that is built with -frtti
and the rest of the code is built
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #3 from andysem at mail dot ru ---
I think, a failing dynamic_cast would not be useful as this would make
std::use_facet unusable with -fno-rtti.
Re. ODR violation in the latest code, while it is true that the
dynamic/static_cast is
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
--- Comment #2 from Jonathan Wakely ---
It's mostly OK to mix code with -frtti and -fno-rtti, but sometimes it bites
you.
The crash with older releases seems like __dynamic_cast should gracefully
handle missing RTTI and just fail, not
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113099
Richard Biener changed:
What|Removed |Added
Keywords||ABI, documentation
--- Comment #1
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