Merge pull request #5492 from MicrosoftDocs/FromPublicMasterBranch

Confirm merge from FromPublicMasterBranch to main to sync with https://github.com/MicrosoftDocs/cpp-docs (branch main)

Author: PhilKang0704

docs/error-messages/compiler-errors-2/compiler-error-c2526.md

@@ -1,13 +1,26 @@
 ---
 description: "Learn more about: Compiler Error C2526"
 title: "Compiler Error C2526"
-ms.date: "11/04/2016"
+ms.date: "03/08/2024"
 f1_keywords: ["C2526"]
 helpviewer_keywords: ["C2526"]
-ms.assetid: 0f8c554c-f990-457e-bcae-b6f273481825
 ---
 # Compiler Error C2526
 
 'identifier1' : C linkage function cannot return C++ class 'identifier2'
 
 A function defined with C linkage cannot return a user-defined type.
+
+The following sample generates C2526:
+
+```cpp
+// C2526.cpp
+// compile with: /c
+template <typename T>
+class A {};
+
+extern "C" A<int> func()   // C2526
+{
+    return A<int>();
+}
+```

docs/error-messages/compiler-errors-2/compiler-error-c2537.md

@@ -1,26 +1,22 @@
 ---
 description: "Learn more about: Compiler Error C2537"
 title: "Compiler Error C2537"
-ms.date: "11/04/2016"
+ms.date: "03/08/2024"
 f1_keywords: ["C2537"]
 helpviewer_keywords: ["C2537"]
-ms.assetid: aee81d8e-300e-4a8b-b6c4-b3828398b34e
 ---
 # Compiler Error C2537
 
 'specifier' : illegal linkage specification
 
-Possible causes:
-
-1. The linkage specifier is not supported. Only the "C" linkage specifier is supported.
-
-1. "C" linkage is specified for more than one function in a set of overloaded functions. This is not allowed.
+The linkage specifier is not supported. Only the "C" and "C++" linkage specifiers are supported.
 
 The following sample generates C2537:
 
 ```cpp
 // C2537.cpp
 // compile with: /c
-extern "c" void func();   // C2537
+extern "c" void func1();   // C2537
 extern "C" void func2();   // OK
+extern "C++" void func3();   // OK
 ```