Remove non-standard basic_string_view::clear() member.

This patch removes the clear() member from <string_view>. The
modifier was removed from the TS before it ever landed in the standard.
There is no reason libc++ should be providing this method.

llvm-svn: 302869

2 files changed, 0 insertions, 75 deletions

diff --git a/libcxx/include/string_view b/libcxx/include/string_view
index 5c42b36ca56..e59f099f16e 100644
--- a/libcxx/include/string_view
+++ b/libcxx/include/string_view
@@ -103,7 +103,6 @@ namespace std {
       constexpr const_pointer data() const noexcept;
 
       // 7.7, basic_string_view modifiers
-      constexpr void clear() noexcept;
       constexpr void remove_prefix(size_type n);
       constexpr void remove_suffix(size_type n);
       constexpr void swap(basic_string_view& s) noexcept;
@@ -293,13 +292,6 @@ public:
 
 	// [string.view.modifiers], modifiers:
 	_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
-	void clear() _NOEXCEPT
-	{
-		__data = nullptr;
-		__size = 0;
-	}
-
-	_LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
 	void remove_prefix(size_type __n) _NOEXCEPT
 	{
 		_LIBCPP_ASSERT(__n <= size(), "remove_prefix() can't remove more than size()");
diff --git a/libcxx/test/std/strings/string.view/string.view.modifiers/clear.pass.cpp b/libcxx/test/std/strings/string.view/string.view.modifiers/clear.pass.cpp
deleted file mode 100644
index c1137e80aca..00000000000
--- a/libcxx/test/std/strings/string.view/string.view.modifiers/clear.pass.cpp
+++ /dev/null
@@ -1,67 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-
-// <string_view>
-
-// void clear() noexcept
-
-#include <string_view>
-#include <cassert>
-
-#include "test_macros.h"
-
-template<typename CharT>
-void test ( const CharT *s, size_t len ) {
-    typedef std::basic_string_view<CharT> SV;
-    {
-    SV sv1 ( s );
-    assert ( sv1.size() == len );
-    assert ( sv1.data() == s );
-
-    sv1.clear ();
-    assert ( sv1.data() == nullptr );
-    assert ( sv1.size() == 0 );
-    assert ( sv1 == SV());
-    }
-}
-
-#if TEST_STD_VER > 11
-constexpr size_t test_ce ( size_t n ) {
-    typedef std::basic_string_view<char> SV;
-    SV sv1{ "ABCDEFGHIJKL", n };
-    sv1.clear();
-    return sv1.size();
-}
-#endif
-
-int main () {
-    test ( "ABCDE", 5 );
-    test ( "a", 1 );
-    test ( "", 0 );
-
-    test ( L"ABCDE", 5 );
-    test ( L"a", 1 );
-    test ( L"", 0 );
-
-#if TEST_STD_VER >= 11
-    test ( u"ABCDE", 5 );
-    test ( u"a", 1 );
-    test ( u"", 0 );
-
-    test ( U"ABCDE", 5 );
-    test ( U"a", 1 );
-    test ( U"", 0 );
-#endif
-
-#if TEST_STD_VER > 11
-    static_assert ( test_ce (5) == 0, "" );
-#endif
-
-}