Update tests for upcoming compiler changes to consteval (#5960)

Author: StephanTLavavej

tests/std/tests/P1208R6_source_location/test.cpp

@@ -96,19 +96,15 @@ constexpr void sloc_constructor_test() {
     assert(x.loc.column() == 13);
 #endif // ^^^ !defined(__EDG__) ^^^
 #if _USE_DETAILED_FUNCTION_NAME_IN_SOURCE_LOCATION
-#if !defined(__clang__) && !defined(__EDG__) // TRANSITION, VSO-1285783
-    if (is_constant_evaluated()) {
-        assert(x.loc.function_name() == "int __cdecl main(void)"sv);
-    } else
+#if !defined(__clang__) && !defined(__EDG__) // TRANSITION, VSO-1285783 (fixed in MSVC Compiler 19.51)
+    if (!is_constant_evaluated())
 #endif // ^^^ workaround ^^^
     {
         assert(x.loc.function_name() == "void __cdecl sloc_constructor_test(void)"sv);
     }
 #else // ^^^ detailed / basic vvv
-#if !defined(__clang__) && !defined(__EDG__) // TRANSITION, VSO-1285783
-    if (is_constant_evaluated()) {
-        assert(x.loc.function_name() == "main"sv);
-    } else
+#if !defined(__clang__) && !defined(__EDG__) // TRANSITION, VSO-1285783 (fixed in MSVC Compiler 19.51)
+    if (!is_constant_evaluated())
 #endif // ^^^ workaround ^^^
     {
         assert(x.loc.function_name() == "sloc_constructor_test"sv);
@@ -146,19 +142,15 @@ constexpr void sub_member_test() {
     assert(s.x.loc.column() == 14);
 #endif // ^^^ !defined(__EDG__) ^^^
 #if _USE_DETAILED_FUNCTION_NAME_IN_SOURCE_LOCATION
-#if !defined(__clang__) && !defined(__EDG__) // TRANSITION, VSO-1285783
-    if (is_constant_evaluated()) {
-        assert(s.x.loc.function_name() == "int __cdecl main(void)"sv);
-    } else
+#if !defined(__clang__) && !defined(__EDG__) // TRANSITION, VSO-1285783 (fixed in MSVC Compiler 19.51)
+    if (!is_constant_evaluated())
 #endif // ^^^ workaround ^^^
     {
         assert(s.x.loc.function_name() == "void __cdecl sub_member_test(void)"sv);
     }
 #else // ^^^ detailed / basic vvv
 #if !defined(__clang__) && !defined(__EDG__) // TRANSITION, VSO-1285783
-    if (is_constant_evaluated()) {
-        assert(s.x.loc.function_name() == "main"sv);
-    } else
+    if (!is_constant_evaluated())
 #endif // ^^^ workaround ^^^
     {
         assert(s.x.loc.function_name() == "sub_member_test"sv);

tests/std/tests/VSO_1775715_user_defined_modules/user.ixx

@@ -16,6 +16,11 @@ namespace user {
         assert(test_environment_preparer.succeeded());
     }
 
+    // TRANSITION, VSO-2649620 reachability problem in modules
+    // The compiler does not export the bindings for `operator==` for a string
+    // and character pointer unless we force it with this export.
+    export using std::operator==;
+
     // DevCom-10313766 VSO-1775715 "Using std::format in a module
     // requires including <format> header in .cpp files using that module"
     export template <class T>