Fixed std::basic_stringbuf

Author: H-G-Hristov

libcxx/include/sstream

@@ -416,7 +416,7 @@ public:
   template <class _Tp>
     requires is_convertible_v<const _Tp&, basic_string_view<_CharT, _Traits>>
   _LIBCPP_HIDE_FROM_ABI basic_stringbuf(const _Tp& __t, ios_base::openmode __which, const _Allocator& __a)
-      : __hm_(nullptr), __mode_(__which | ios_base::in | ios_base::out) {
+      : __hm_(nullptr), __mode_(__which) {
     basic_string_view<_CharT, _Traits> __sv = __t;
     __str_                                  = string_type(__sv, __a);
     __init_buf_ptrs();

libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.members/str.move.pass.cpp

@@ -55,7 +55,6 @@ struct StringBuf : std::stringbuf {
 };
 
 static void test_altered_sequence_pointers() {
-#if TEST_STD_VER < 26
   {
     auto src = StringBuf("hello world", std::ios_base::in);
     src.public_setg(4, 6, 9);
@@ -80,7 +79,6 @@ static void test_altered_sequence_pointers() {
     assert(dest.str().empty());
     assert(dest.view().empty());
   }
-#endif // TEST_STD_VER < 26
 }
 
 int main(int, char**) {

libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.members/str.pass.cpp

@@ -28,7 +28,6 @@ struct StringBuf : std::stringbuf {
 };
 
 static void test_altered_sequence_pointers() {
-#if TEST_STD_VER < 26
   {
     StringBuf src("hello world", std::ios_base::in);
     src.public_setg(4, 6, 9);
@@ -49,7 +48,6 @@ static void test_altered_sequence_pointers() {
     LIBCPP_ASSERT(str == "o wor");
     LIBCPP_ASSERT(dest.str() == "o wor");
   }
-#endif // TEST_STD_VER < 26
 }
 
 int main(int, char**)

libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.members/view.pass.cpp

@@ -59,7 +59,6 @@ struct StringBuf : std::stringbuf {
 };
 
 static void test_altered_sequence_pointers() {
-#if TEST_STD_VER < 26
   {
     auto src = StringBuf("hello world", std::ios_base::in);
     src.public_setg(4, 6, 9);
@@ -76,7 +75,6 @@ static void test_altered_sequence_pointers() {
     assert(dest.view() == dest.str());
     LIBCPP_ASSERT(dest.view() == "o wor");
   }
-#endif // TEST_STD_VER < 26
 }
 
 int main(int, char**) {

libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekoff.pass.cpp

@@ -45,7 +45,6 @@ int main(int, char**)
         assert(sb.pubseekoff(0, std::ios_base::cur, std::ios_base::out) == 0);
         assert(sb.pubseekoff(0, std::ios_base::end, std::ios_base::out) == 0);
     }
-#if TEST_STD_VER < 26
     {
         std::stringbuf sb("0123456789", std::ios_base::in);
         assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1);
@@ -79,7 +78,6 @@ int main(int, char**)
         assert(sb.sputc('c') == 'c');
         assert(sb.str() == "012a456c89");
     }
-#endif // TEST_STD_VER < 26
     {
         std::stringbuf sb("0123456789");
         assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
@@ -108,7 +106,6 @@ int main(int, char**)
         assert(sb.str() == "0123456c89");
     }
 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
-#  if TEST_STD_VER < 26
     {
         std::wstringbuf sb(L"0123456789", std::ios_base::in);
         assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1);
@@ -142,7 +139,6 @@ int main(int, char**)
         assert(sb.sputc(L'c') == L'c');
         assert(sb.str() == L"012a456c89");
     }
-#  endif // TEST_STD_VER < 26
     {
         std::wstringbuf sb(L"0123456789");
         assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);

libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekpos.pass.cpp

@@ -21,7 +21,6 @@
 
 int main(int, char**)
 {
-#if TEST_STD_VER < 26
     {
         std::stringbuf sb("0123456789", std::ios_base::in);
         assert(sb.pubseekpos(3, std::ios_base::out) == -1);
@@ -37,7 +36,6 @@ int main(int, char**)
         assert(sb.sputc('a') == 'a');
         assert(sb.str() == "012a456789");
     }
-#endif // TEST_STD_VER < 26
     {
         std::stringbuf sb("0123456789");
         assert(sb.pubseekpos(3, std::ios_base::in) == 3);
@@ -51,7 +49,6 @@ int main(int, char**)
         assert(sb.str() == "0123456789");
     }
 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
-#  if TEST_STD_VER < 26
     {
         std::wstringbuf sb(L"0123456789", std::ios_base::in);
         assert(sb.pubseekpos(3, std::ios_base::out) == -1);
@@ -67,7 +64,6 @@ int main(int, char**)
         assert(sb.sputc(L'a') == L'a');
         assert(sb.str() == L"012a456789");
     }
-#  endif // TEST_STD_VER < 26
     {
         std::wstringbuf sb(L"0123456789");
         assert(sb.pubseekpos(3, std::ios_base::in) == 3);