OK.
On Mon, Feb 19, 2018 at 2:08 PM, Jakub Jelinek <ja...@redhat.com> wrote: > Hi! > > For internal functions, we use the whole u.bits of the CALL_EXPR > for the internal function number (in this case IFN_LAUNDER), so using > the lang flags on it doesn't work. In a couple of other places > I've checked that test or set lang flags on CALL_EXPR I saw internal fns > special cased early, but admittedly haven't checked everything. > > Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk? > > 2018-02-19 Jakub Jelinek <ja...@redhat.com> > > PR c++/84445 > * class.c (fixed_type_or_null) <case CALL_EXPR>: Only test > TREE_HAS_CONSTRUCTOR if instance is not an internal function call. > > * g++.dg/cpp1z/launder7.C: New test. > > --- gcc/cp/class.c.jj 2018-02-16 19:39:08.184061984 +0100 > +++ gcc/cp/class.c 2018-02-19 13:34:33.726813207 +0100 > @@ -7128,7 +7128,8 @@ fixed_type_or_null (tree instance, int * > > case CALL_EXPR: > /* This is a call to a constructor, hence it's never zero. */ > - if (TREE_HAS_CONSTRUCTOR (instance)) > + if (CALL_EXPR_FN (instance) > + && TREE_HAS_CONSTRUCTOR (instance)) > { > if (nonnull) > *nonnull = 1; > --- gcc/testsuite/g++.dg/cpp1z/launder7.C.jj 2018-02-19 13:50:05.954797679 > +0100 > +++ gcc/testsuite/g++.dg/cpp1z/launder7.C 2018-02-19 13:47:26.603792932 > +0100 > @@ -0,0 +1,10 @@ > +// PR c++/84445 > +// { dg-do compile } > + > +struct A { virtual void foo (); }; > + > +void > +bar (A *p) > +{ > + __builtin_launder (p)->foo (); > +} > > Jakub