[libc++] Qualify calls to nullary functions like __throw_foo (#122465)

This is technically not necessary in most cases to prevent issues with ADL,
but let's be consistent. This allows us to remove the libcpp-qualify-declval
clang-tidy check, which is now enforced by the robust-against-adl clang-tidy check.

Author: ldionne

libcxx/docs/CodingGuidelines.rst

@@ -36,7 +36,7 @@ Function overloading also applies to operators. Using ``&user_object`` may call
       ...
     }
 
-This is mostly enforced by the clang-tidy checks ``libcpp-robust-against-adl`` and ``libcpp-qualify-declval``.
+This is mostly enforced by the clang-tidy check ``libcpp-robust-against-adl``.
 
 Avoid including public headers
 ==============================

libcxx/include/__algorithm/ranges_iterator_concept.h

@@ -44,7 +44,7 @@ consteval auto __get_iterator_concept() {
 }
 
 template <class _Iter>
-using __iterator_concept _LIBCPP_NODEBUG = decltype(__get_iterator_concept<_Iter>());
+using __iterator_concept _LIBCPP_NODEBUG = decltype(ranges::__get_iterator_concept<_Iter>());
 
 } // namespace ranges
 _LIBCPP_END_NAMESPACE_STD

libcxx/include/__algorithm/stable_sort.h

@@ -252,8 +252,8 @@ _LIBCPP_CONSTEXPR_SINCE_CXX26 void __stable_sort(
       is_integral_v<value_type > && is_same_v< value_type&, __iter_reference<_RandomAccessIterator>>;
   constexpr auto __allowed_radix_sort = __default_comp && __integral_value;
   if constexpr (__allowed_radix_sort) {
-    if (__len <= __buff_size && __len >= static_cast<difference_type>(__radix_sort_min_bound<value_type>()) &&
-        __len <= static_cast<difference_type>(__radix_sort_max_bound<value_type>())) {
+    if (__len <= __buff_size && __len >= static_cast<difference_type>(std::__radix_sort_min_bound<value_type>()) &&
+        __len <= static_cast<difference_type>(std::__radix_sort_max_bound<value_type>())) {
       if (__libcpp_is_constant_evaluated()) {
         for (auto* __p = __buff; __p < __buff + __buff_size; ++__p) {
           std::__construct_at(__p);

libcxx/include/__chrono/formatter.h

@@ -315,7 +315,7 @@ _LIBCPP_HIDE_FROM_ABI void __format_chrono_using_chrono_specs(
       case _CharT('T'):
         __facet.put(
             {__sstr}, __sstr, _CharT(' '), std::addressof(__t), std::to_address(__s), std::to_address(__it + 1));
-        if constexpr (__use_fraction<_Tp>())
+        if constexpr (__formatter::__use_fraction<_Tp>())
           __formatter::__format_sub_seconds(__sstr, __value);
         break;
 
@@ -378,7 +378,7 @@ _LIBCPP_HIDE_FROM_ABI void __format_chrono_using_chrono_specs(
         break;
 
       case _CharT('O'):
-        if constexpr (__use_fraction<_Tp>()) {
+        if constexpr (__formatter::__use_fraction<_Tp>()) {
           // Handle OS using the normal representation for the non-fractional
           // part. There seems to be no locale information regarding how the
           // fractional part should be formatted.

libcxx/include/__compare/common_comparison_category.h

@@ -55,7 +55,7 @@ __compute_comp_type(const _ClassifyCompCategory (&__types)[_Size]) {
 template <class... _Ts, bool _False = false>
 _LIBCPP_HIDE_FROM_ABI constexpr auto __get_comp_type() {
   using _CCC                    = _ClassifyCompCategory;
-  constexpr _CCC __type_kinds[] = {_StrongOrd, __type_to_enum<_Ts>()...};
+  constexpr _CCC __type_kinds[] = {_StrongOrd, __comp_detail::__type_to_enum<_Ts>()...};
   constexpr _CCC __cat          = __comp_detail::__compute_comp_type(__type_kinds);
   if constexpr (__cat == _None)
     return void();

libcxx/include/__condition_variable/condition_variable.h

@@ -210,7 +210,7 @@ inline void condition_variable::__do_timed_wait(
     unique_lock<mutex>& __lk, chrono::time_point<chrono::steady_clock, chrono::nanoseconds> __tp) _NOEXCEPT {
   using namespace chrono;
   if (!__lk.owns_lock())
-    __throw_system_error(EPERM, "condition_variable::timed wait: mutex not locked");
+    std::__throw_system_error(EPERM, "condition_variable::timed wait: mutex not locked");
   nanoseconds __d = __tp.time_since_epoch();
   timespec __ts;
   seconds __s                 = duration_cast<seconds>(__d);
@@ -225,7 +225,7 @@ inline void condition_variable::__do_timed_wait(
   }
   int __ec = pthread_cond_clockwait(&__cv_, __lk.mutex()->native_handle(), CLOCK_MONOTONIC, &__ts);
   if (__ec != 0 && __ec != ETIMEDOUT)
-    __throw_system_error(__ec, "condition_variable timed_wait failed");
+    std::__throw_system_error(__ec, "condition_variable timed_wait failed");
 }
 #  endif // _LIBCPP_HAS_COND_CLOCKWAIT
 

libcxx/include/__filesystem/directory_entry.h

@@ -286,7 +286,7 @@ class directory_entry {
       return;
     }
     if (__ec && (!__allow_dne || !__is_dne_error(__ec)))
-      __throw_filesystem_error(__msg, __p_, __ec);
+      filesystem::__throw_filesystem_error(__msg, __p_, __ec);
   }
 
   _LIBCPP_HIDE_FROM_ABI void __refresh(error_code* __ec = nullptr) {

libcxx/include/__format/format_arg_store.h

@@ -164,7 +164,7 @@ consteval __arg_t __determine_arg_t() {
 template <class _Context, class _Tp>
 _LIBCPP_HIDE_FROM_ABI basic_format_arg<_Context> __create_format_arg(_Tp& __value) noexcept {
   using _Dp               = remove_const_t<_Tp>;
-  constexpr __arg_t __arg = __determine_arg_t<_Context, _Dp>();
+  constexpr __arg_t __arg = __format::__determine_arg_t<_Context, _Dp>();
   static_assert(__arg != __arg_t::__none, "the supplied type is not formattable");
   static_assert(__formattable_with<_Tp, _Context>);
 

libcxx/include/__functional/function.h

@@ -432,7 +432,7 @@ class __value_func<_Rp(_ArgTypes...)> {
 
   _LIBCPP_HIDE_FROM_ABI _Rp operator()(_ArgTypes&&... __args) const {
     if (__f_ == nullptr)
-      __throw_bad_function_call();
+      std::__throw_bad_function_call();
     return (*__f_)(std::forward<_ArgTypes>(__args)...);
   }
 
@@ -607,7 +607,7 @@ struct __policy_invoker<_Rp(_ArgTypes...)> {
   _LIBCPP_HIDE_FROM_ABI explicit __policy_invoker(__Call __c) : __call_(__c) {}
 
   _LIBCPP_HIDE_FROM_ABI static _Rp __call_empty(const __policy_storage*, __fast_forward<_ArgTypes>...) {
-    __throw_bad_function_call();
+    std::__throw_bad_function_call();
   }
 
   template <typename _Fun>

libcxx/include/__locale

@@ -154,7 +154,7 @@ inline _LIBCPP_HIDE_FROM_ABI locale::locale(const locale& __other, _Facet* __f)
 template <class _Facet>
 locale locale::combine(const locale& __other) const {
   if (!std::has_facet<_Facet>(__other))
-    __throw_runtime_error("locale::combine: locale missing facet");
+    std::__throw_runtime_error("locale::combine: locale missing facet");
 
   return locale(*this, &const_cast<_Facet&>(std::use_facet<_Facet>(__other)));
 }
@@ -1298,7 +1298,7 @@ struct _LIBCPP_EXPORTED_FROM_ABI __narrow_to_utf8<16> : public codecvt<char16_t,
       const char16_t* __wn = (const char16_t*)__wb;
       __r = do_out(__mb, (const char16_t*)__wb, (const char16_t*)__we, __wn, __buf, __buf + __sz, __bn);
       if (__r == codecvt_base::error || __wn == (const char16_t*)__wb)
-        __throw_runtime_error("locale not supported");
+        std::__throw_runtime_error("locale not supported");
       for (const char* __p = __buf; __p < __bn; ++__p, ++__s)
         *__s = *__p;
       __wb = (const _CharT*)__wn;
@@ -1326,7 +1326,7 @@ struct _LIBCPP_EXPORTED_FROM_ABI __narrow_to_utf8<32> : public codecvt<char32_t,
       const char32_t* __wn = (const char32_t*)__wb;
       __r = do_out(__mb, (const char32_t*)__wb, (const char32_t*)__we, __wn, __buf, __buf + __sz, __bn);
       if (__r == codecvt_base::error || __wn == (const char32_t*)__wb)
-        __throw_runtime_error("locale not supported");
+        std::__throw_runtime_error("locale not supported");
       for (const char* __p = __buf; __p < __bn; ++__p, ++__s)
         *__s = *__p;
       __wb = (const _CharT*)__wn;
@@ -1370,7 +1370,7 @@ struct _LIBCPP_EXPORTED_FROM_ABI __widen_from_utf8<16> : public codecvt<char16_t
       const char* __nn = __nb;
       __r              = do_in(__mb, __nb, __ne - __nb > __sz ? __nb + __sz : __ne, __nn, __buf, __buf + __sz, __bn);
       if (__r == codecvt_base::error || __nn == __nb)
-        __throw_runtime_error("locale not supported");
+        std::__throw_runtime_error("locale not supported");
       for (const char16_t* __p = __buf; __p < __bn; ++__p, ++__s)
         *__s = *__p;
       __nb = __nn;
@@ -1398,7 +1398,7 @@ struct _LIBCPP_EXPORTED_FROM_ABI __widen_from_utf8<32> : public codecvt<char32_t
       const char* __nn = __nb;
       __r              = do_in(__mb, __nb, __ne - __nb > __sz ? __nb + __sz : __ne, __nn, __buf, __buf + __sz, __bn);
       if (__r == codecvt_base::error || __nn == __nb)
-        __throw_runtime_error("locale not supported");
+        std::__throw_runtime_error("locale not supported");
       for (const char32_t* __p = __buf; __p < __bn; ++__p, ++__s)
         *__s = *__p;
       __nb = __nn;