diff --git a/test/strings/basic.string/string.cons/initializer_list.pass.cpp b/test/strings/basic.string/string.cons/initializer_list.fail.cpp
similarity index 100%
rename from test/strings/basic.string/string.cons/initializer_list.pass.cpp
rename to test/strings/basic.string/string.cons/initializer_list.fail.cpp
diff --git a/test/strings/basic.string/string.cons/initializer_list_assignment.pass.cpp b/test/strings/basic.string/string.cons/initializer_list_assignment.fail.cpp
similarity index 100%
rename from test/strings/basic.string/string.cons/initializer_list_assignment.pass.cpp
rename to test/strings/basic.string/string.cons/initializer_list_assignment.fail.cpp
diff --git a/test/strings/basic.string/string.modifiers/string_append/initializer_list.pass.cpp b/test/strings/basic.string/string.modifiers/string_append/initializer_list.fail.cpp
similarity index 100%
rename from test/strings/basic.string/string.modifiers/string_append/initializer_list.pass.cpp
rename to test/strings/basic.string/string.modifiers/string_append/initializer_list.fail.cpp
diff --git a/test/strings/basic.string/string.modifiers/string_assign/initializer_list.pass.cpp b/test/strings/basic.string/string.modifiers/string_assign/initializer_list.fail.cpp
similarity index 100%
rename from test/strings/basic.string/string.modifiers/string_assign/initializer_list.pass.cpp
rename to test/strings/basic.string/string.modifiers/string_assign/initializer_list.fail.cpp
diff --git a/test/strings/basic.string/string.modifiers/string_insert/iter_initializer_list.pass.cpp b/test/strings/basic.string/string.modifiers/string_insert/iter_initializer_list.fail.cpp
similarity index 100%
rename from test/strings/basic.string/string.modifiers/string_insert/iter_initializer_list.pass.cpp
rename to test/strings/basic.string/string.modifiers/string_insert/iter_initializer_list.fail.cpp
diff --git a/test/strings/basic.string/string.modifiers/string_op_plus_equal/initializer_list.pass.cpp b/test/strings/basic.string/string.modifiers/string_op_plus_equal/initializer_list.fail.cpp
similarity index 100%
rename from test/strings/basic.string/string.modifiers/string_op_plus_equal/initializer_list.pass.cpp
rename to test/strings/basic.string/string.modifiers/string_op_plus_equal/initializer_list.fail.cpp
diff --git a/test/strings/basic.string/string.modifiers/string_replace/iter_iter_initializer_list.pass.cpp b/test/strings/basic.string/string.modifiers/string_replace/iter_iter_initializer_list.fail.cpp
similarity index 100%
rename from test/strings/basic.string/string.modifiers/string_replace/iter_iter_initializer_list.pass.cpp
rename to test/strings/basic.string/string.modifiers/string_replace/iter_iter_initializer_list.fail.cpp
diff --git a/test/strings/c.strings/cuchar.pass.cpp b/test/strings/c.strings/cuchar.fail.cpp
similarity index 100%
rename from test/strings/c.strings/cuchar.pass.cpp
rename to test/strings/c.strings/cuchar.fail.cpp
diff --git a/test/strings/c.strings/cwchar.pass.cpp b/test/strings/c.strings/cwchar.fail.cpp
similarity index 100%
rename from test/strings/c.strings/cwchar.pass.cpp
rename to test/strings/c.strings/cwchar.fail.cpp
diff --git a/test/strings/c.strings/version_cuchar.pass.cpp b/test/strings/c.strings/version_cuchar.fail.cpp
similarity index 100%
rename from test/strings/c.strings/version_cuchar.pass.cpp
rename to test/strings/c.strings/version_cuchar.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/assign2.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/assign2.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/assign2.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/assign2.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/compare.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/compare.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/compare.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/compare.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq_int_type.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq_int_type.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq_int_type.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq_int_type.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/length.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/length.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/length.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/length.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/lt.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/lt.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/lt.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/lt.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/not_eof.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/not_eof.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/not_eof.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/not_eof.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_char_type.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_char_type.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_char_type.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_char_type.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_int_type.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_int_type.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_int_type.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_int_type.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/assign2.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/assign2.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/assign2.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/assign2.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/compare.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/compare.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/compare.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/compare.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq_int_type.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq_int_type.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq_int_type.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq_int_type.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/length.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/length.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/length.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/length.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/lt.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/lt.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/lt.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/lt.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/not_eof.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/not_eof.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/not_eof.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/not_eof.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_char_type.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_char_type.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_char_type.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_char_type.fail.cpp
diff --git a/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_int_type.pass.cpp b/test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_int_type.fail.cpp
similarity index 100%
rename from test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_int_type.pass.cpp
rename to test/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_int_type.fail.cpp