Enable and fix warnings during the build. Although CMake adds warning flags, they are ignored in the libc++ headers because the headers '#pragma system header' themselves. This patch disables the system header pragma when building libc++ and fixes the warnings that arose. The warnings fixed were: 1. <memory> - anonymous structs are a GNU extension 2. <functional> - anonymous structs are a GNU extension. 3. <__hash_table> - Embedded preprocessor directives have undefined behavior. 4. <string> - Definition is missing noexcept from declaration. 5. <__std_stream> - Unused variable. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@242623 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__hash_table b/include/__hash_table index f3a2030..ec20e10 100644 --- a/include/__hash_table +++ b/include/__hash_table
@@ -984,15 +984,17 @@ __equal_range_multi(const _Key& __k) const; void swap(__hash_table& __u) +#if _LIBCPP_STD_VER <= 11 _NOEXCEPT_( __is_nothrow_swappable<hasher>::value && __is_nothrow_swappable<key_equal>::value -#if _LIBCPP_STD_VER <= 11 && (!allocator_traits<__pointer_allocator>::propagate_on_container_swap::value || __is_nothrow_swappable<__pointer_allocator>::value) && (!__node_traits::propagate_on_container_swap::value || __is_nothrow_swappable<__node_allocator>::value) -#endif ); +#else + _NOEXCEPT_(__is_nothrow_swappable<hasher>::value && __is_nothrow_swappable<key_equal>::value); +#endif _LIBCPP_INLINE_VISIBILITY size_type max_bucket_count() const _NOEXCEPT @@ -2351,15 +2353,17 @@ template <class _Tp, class _Hash, class _Equal, class _Alloc> void __hash_table<_Tp, _Hash, _Equal, _Alloc>::swap(__hash_table& __u) +#if _LIBCPP_STD_VER <= 11 _NOEXCEPT_( __is_nothrow_swappable<hasher>::value && __is_nothrow_swappable<key_equal>::value -#if _LIBCPP_STD_VER <= 11 && (!allocator_traits<__pointer_allocator>::propagate_on_container_swap::value || __is_nothrow_swappable<__pointer_allocator>::value) && (!__node_traits::propagate_on_container_swap::value || __is_nothrow_swappable<__node_allocator>::value) -#endif ) +#else + _NOEXCEPT_(__is_nothrow_swappable<hasher>::value && __is_nothrow_swappable<key_equal>::value) +#endif { { __node_pointer_pointer __npp = __bucket_list_.release(); diff --git a/include/__std_stream b/include/__std_stream index 5403ada..f867cd2 100644 --- a/include/__std_stream +++ b/include/__std_stream
@@ -276,7 +276,6 @@ codecvt_base::result __r; char_type* pbase = &__1buf; char_type* pptr = pbase + 1; - char_type* epptr = pptr; do { const char_type* __e; diff --git a/include/functional b/include/functional index 5ee9417..9bed783 100644 --- a/include/functional +++ b/include/functional
@@ -2402,14 +2402,14 @@ size_t __b; size_t __c; size_t __d; - }; + } __s; } __u; - __u.__a = 0; - __u.__b = 0; - __u.__c = 0; - __u.__d = 0; + __u.__s.__a = 0; + __u.__s.__b = 0; + __u.__s.__c = 0; + __u.__s.__d = 0; __u.__t = __v; - return __u.__a ^ __u.__b ^ __u.__c ^ __u.__d; + return __u.__s.__a ^ __u.__s.__b ^ __u.__s.__c ^ __u.__s.__d; #elif defined(__x86_64__) // Zero out padding bits union @@ -2419,12 +2419,12 @@ { size_t __a; size_t __b; - }; + } __s; } __u; - __u.__a = 0; - __u.__b = 0; + __u.__s.__a = 0; + __u.__s.__b = 0; __u.__t = __v; - return __u.__a ^ __u.__b; + return __u.__s.__a ^ __u.__s.__b; #else return __scalar_hash<long double>::operator()(__v); #endif diff --git a/include/memory b/include/memory index 22311aa..df35a07 100644 --- a/include/memory +++ b/include/memory
@@ -3420,7 +3420,7 @@ { size_t __a; size_t __b; - }; + } __s; } __u; __u.__t = __v; return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); @@ -3442,7 +3442,7 @@ size_t __a; size_t __b; size_t __c; - }; + } __s; } __u; __u.__t = __v; return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); @@ -3465,7 +3465,7 @@ size_t __b; size_t __c; size_t __d; - }; + } __s; } __u; __u.__t = __v; return __murmur2_or_cityhash<size_t>()(&__u, sizeof(__u)); diff --git a/include/string b/include/string index 6be2195..5777ee2 100644 --- a/include/string +++ b/include/string
@@ -1936,7 +1936,12 @@ template <class _CharT, class _Traits, class _Allocator> inline _LIBCPP_INLINE_VISIBILITY basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a) - : __r_(__a) +#if _LIBCPP_STD_VER <= 14 + _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value) +#else + _NOEXCEPT +#endif +: __r_(__a) { #if _LIBCPP_DEBUG_LEVEL >= 2 __get_db()->__insert_c(this); 