On Sat, 22 Oct 2022 at 00:28, Marek Polacek wrote:
> I've run the testsuite/bootstrap with the warning enabled by default.
> There were just a few FAILs:
> * g++.dg/warn/Wdangling-pointer-2.C
> * 20_util/any/misc/any_cast.cc
> * 20_util/forward/c_neg.cc
> * 20_util/forward/f_neg.cc

These two are XFAIL tests, they're checking for a required static
assert due to misusing std::forward, so I don't think we want to
change them to remove a "bug" (they're meant to be buggy).
I think they should use -Wno-dangling-reference

> * experimental/any/misc/any_cast.cc
> all of these look like genuine bugs.  A bootstrap with the warning
> enabled by default passed.


I've attached a patch for the two any_cast.cc tests that avoids
creating dangling references, without changing the intended behaviour
of the tests.