llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clangd

@llvm/pr-subscribers-clang-tools-extra

Author: Younan Zhang (zyn0217)

<details>
<summary>Changes</summary>

ConceptDecl doesn't have an associated template declaration, and it doesn't 
introduce a type either.

Fixes https://github.com/llvm/llvm-project/issues/188914


---
Full diff: https://github.com/llvm/llvm-project/pull/191654.diff


2 Files Affected:

- (modified) clang-tools-extra/clangd/XRefs.cpp (+1) 
- (modified) clang-tools-extra/clangd/unittests/XRefsTests.cpp (+7-2) 


``````````diff
diff --git a/clang-tools-extra/clangd/XRefs.cpp 
b/clang-tools-extra/clangd/XRefs.cpp
index 4b685b7bf793e..2247586b78c84 100644
--- a/clang-tools-extra/clangd/XRefs.cpp
+++ b/clang-tools-extra/clangd/XRefs.cpp
@@ -2060,6 +2060,7 @@ static QualType typeForNode(const ASTContext &Ctx, const 
HeuristicResolver *H,
       QualType VisitTemplateDecl(const TemplateDecl *D) {
         return Visit(D->getTemplatedDecl());
       }
+      QualType VisitConceptDecl(const ConceptDecl *C) { return QualType(); }
     } V(Ctx);
     return V.Visit(D);
   }
diff --git a/clang-tools-extra/clangd/unittests/XRefsTests.cpp 
b/clang-tools-extra/clangd/unittests/XRefsTests.cpp
index 8e97db7ab17c5..00ead63050c8d 100644
--- a/clang-tools-extra/clangd/unittests/XRefsTests.cpp
+++ b/clang-tools-extra/clangd/unittests/XRefsTests.cpp
@@ -2094,14 +2094,19 @@ TEST(FindType, All) {
 TEST(FindType, Definition) {
   Annotations A(R"cpp(
     class $decl[[X]];
-    X *^x;
+    X *$x^x;
     class $def[[X]] {};
+
+    template <class T>
+    concept $Concept^True = true;
   )cpp");
   auto TU = TestTU::withCode(A.code().str());
+  TU.ExtraArgs.push_back("-std=c++20");
   ParsedAST AST = TU.build();
 
-  EXPECT_THAT(findType(AST, A.point(), nullptr),
+  EXPECT_THAT(findType(AST, A.point("x"), nullptr),
               ElementsAre(sym("X", A.range("decl"), A.range("def"))));
+  EXPECT_THAT(findType(AST, A.point("Concept"), nullptr), IsEmpty());
 }
 
 TEST(FindType, Index) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/191654
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