[PATCH] D54553: [clangd] Fix crash hovering on non-decltype trailing return

[Marc-Andre Laperle via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL347119: [clangd] Fix crash hovering on non-decltype trailing return (authored by malaperle, committed by ).
Herald added a subscriber: llvm-commits.

Changed prior to commit:
  https://reviews.llvm.org/D54553?vs=174202&id=174482#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D54553

Files:
  clang-tools-extra/trunk/clangd/XRefs.cpp
  clang-tools-extra/trunk/unittests/clangd/XRefsTests.cpp


Index: clang-tools-extra/trunk/clangd/XRefs.cpp
===================================================================
--- clang-tools-extra/trunk/clangd/XRefs.cpp
+++ clang-tools-extra/trunk/clangd/XRefs.cpp
@@ -605,6 +605,7 @@
   // Handle auto return types:
   //- auto foo() {}
   //- auto& foo() {}
+  //- auto foo() -> int {}
   //- auto foo() -> decltype(1+1) {}
   //- operator auto() const { return 10; }
   bool VisitFunctionDecl(FunctionDecl *D) {
@@ -624,12 +625,13 @@
     const AutoType *AT = D->getReturnType()->getContainedAutoType();
     if (AT && !AT->getDeducedType().isNull()) {
       DeducedType = AT->getDeducedType();
-    } else {
+    } else if (auto DT = dyn_cast<DecltypeType>(D->getReturnType())) {
       // auto in a trailing return type just points to a DecltypeType and
       // getContainedAutoType does not unwrap it.
-      const DecltypeType *DT = dyn_cast<DecltypeType>(D->getReturnType());
       if (!DT->getUnderlyingType().isNull())
         DeducedType = DT->getUnderlyingType();
+    } else if (!D->getReturnType().isNull()) {
+      DeducedType = D->getReturnType();
     }
     return true;
   }
Index: clang-tools-extra/trunk/unittests/clangd/XRefsTests.cpp
===================================================================
--- clang-tools-extra/trunk/unittests/clangd/XRefsTests.cpp
+++ clang-tools-extra/trunk/unittests/clangd/XRefsTests.cpp
@@ -836,6 +836,14 @@
           "",
       },
       {
+          R"cpp(// simple trailing return type
+            ^auto main() -> int {
+              return 0;
+            }
+          )cpp",
+          "int",
+      },
+      {
           R"cpp(// auto function return with trailing type
             struct Bar {};
             ^auto test() -> decltype(Bar()) {


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