================
@@ -0,0 +1,89 @@
+// RUN: %check_clang_tidy %s readability-redundant-tag %t -- -- -std=c++20
+
+struct Struct {};
+class Class {};
+union Union {};
+enum Enum {};
+
+void basic() {
+ struct Struct s;
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: redundant 'struct' keyword in
C++ declaration
+ // CHECK-FIXES: Struct s;
+
+ class Class c;
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: redundant 'class' keyword in C++
declaration
+ // CHECK-FIXES: Class c;
+
+ union Union u;
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: redundant 'union' keyword in C++
declaration
+ // CHECK-FIXES: Union u;
+
+ enum Enum e;
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: redundant 'enum' keyword in C++
declaration
+ // CHECK-FIXES: Enum e;
+}
+
+// Hidden by variable (GitHub issue)
+struct Hidden {} Hidden;
+
+void hiddenByVariable() {
+ struct Hidden h;
+}
+
+// Forward declaration
+struct Forward;
+
+void forwardDecl() {
+ struct Forward *p;
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: redundant 'struct' keyword in
C++ declaration
+ // CHECK-FIXES: Forward *p;
+}
+
+// Namespace-qualified type
+namespace N {
+struct NS {};
+}
+
+void namespaceQualified() {
+ struct N::NS x;
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: redundant 'struct' keyword in
C++ declaration
+ // CHECK-FIXES: N::NS x;
+}
+
+// Nested type
+struct Outer {
+ struct Inner {};
+};
+
+void nestedType() {
+ struct Outer::Inner x;
+ // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: redundant 'struct' keyword in
C++ declaration
+ // CHECK-FIXES: Outer::Inner x;
+}
+
+// Hidden by function
+struct FuncTag {};
+
+void FuncTag();
+
+void hiddenByFunction() {
+ struct FuncTag x;
+}
+
+// Hidden by enum constant
+struct EnumTag {};
+
+enum { EnumTag };
+
+void hiddenByEnumConstant() {
+ struct EnumTag x;
+}
+
+// Hidden by another variable
+struct A {};
+
+A A;
+
+void anotherHiddenVariable() {
+ struct A x;
+}
----------------
EugeneZelenko wrote:
Please add newline.
https://github.com/llvm/llvm-project/pull/210007
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