Hi!
Apparently clang has a -fgnuc-version= option which allows it to pretend
it is any GCC version the user likes. It is already bad that it claims to
be GCC 4.2 compatible by default when it is not (various unimplemented
extensions at least), but this option is a horrible idea.
Anyway, this patch adds a hack for it.
Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
2022-03-21 Jakub Jelinek <ja...@redhat.com>
PR libstdc++/104990
* include/bits/locale_facets_nonio.tcc (get): Don't check if do_get
isn't overloaded if __clang__ is defined.
--- libstdc++-v3/include/bits/locale_facets_nonio.tcc 2022-03-18
10:37:41.176593188 +0100
+++ libstdc++-v3/include/bits/locale_facets_nonio.tcc 2022-03-20
20:28:07.203815325 +0100
@@ -1465,7 +1465,7 @@ _GLIBCXX_END_NAMESPACE_LDBL_OR_CXX11
ctype<_CharT> const& __ctype = use_facet<ctype<_CharT> >(__loc);
__err = ios_base::goodbit;
bool __use_state = false;
-#if __GNUC__ >= 5
+#if __GNUC__ >= 5 && !defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpmf-conversions"
// Nasty hack. The C++ standard mandates that get invokes the do_get
Jakub
