For some tarets the weak symbol is always defined, so we get a warning
that its address is never null. The warning isn't useful in this case,
so suppress it.
libstdc++-v3/ChangeLog:
PR libstdc++/108228
* src/c++20/tzdb.cc (zoneinfo_dir): Add diagnostic pragma.
string
zoneinfo_dir()
{
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Waddress"
static const string dir = __gnu_cxx::zoneinfo_dir_override
? __gnu_cxx::zoneinfo_dir_override()
: _GLIBCXX_ZONEINFO_DIR;
+#pragma GCC diagnostic pop
return dir;
}