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Enable and fix warnings during the build.

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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
This commit is contained in:
Eric Fiselier
2015-07-18 20:40:46 +00:00
parent 0f7221ccb8
commit 692177d022
6 changed files with 29 additions and 19 deletions
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12
include/__hash_table
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@@ -984,15 +984,17 @@ public:
__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 @@ __hash_table<_Tp, _Hash, _Equal, _Alloc>::__equal_range_multi(
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();