[PATCH] D83189: [clangd] More complete fix for hover crashes on invalid record.

[Haojian Wu via Phabricator via cfe-commits]

hokein created this revision.
hokein added a reviewer: kadircet.
Herald added subscribers: usaxena95, arphaman, jkorous, MaskRay, ilya-biryukov.
Herald added a project: clang.

We should not call getFieldOffset on invalid record decls.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D83189

Files:
  clang-tools-extra/clangd/Hover.cpp
  clang-tools-extra/clangd/unittests/HoverTests.cpp


Index: clang-tools-extra/clangd/unittests/HoverTests.cpp
===================================================================
--- clang-tools-extra/clangd/unittests/HoverTests.cpp
+++ clang-tools-extra/clangd/unittests/HoverTests.cpp
@@ -784,11 +784,24 @@
          HI.NamespaceScope = "";
          HI.Definition = "int xx";
          HI.LocalScope = "Foo::";
-         HI.Size = 4;
          HI.Type = "int";
          HI.AccessSpecifier = "public";
        }},
-  };
+      {R"cpp(
+        // error-ok
+        struct Foo {
+          Bar xx;
+          int [[y^y]];
+        };)cpp",
+       [](HoverInfo &HI) {
+         HI.Name = "yy";
+         HI.Kind = index::SymbolKind::Field;
+         HI.NamespaceScope = "";
+         HI.Definition = "int yy";
+         HI.LocalScope = "Foo::";
+         HI.Type = "int";
+         HI.AccessSpecifier = "public";
+       }}};
   for (const auto &Case : Cases) {
     SCOPED_TRACE(Case.Code);
 
Index: clang-tools-extra/clangd/Hover.cpp
===================================================================
--- clang-tools-extra/clangd/Hover.cpp
+++ clang-tools-extra/clangd/Hover.cpp
@@ -671,11 +671,11 @@
     const auto *Record = FD->getParent();
     if (Record)
       Record = Record->getDefinition();
-    if (Record && !Record->isDependentType()) {
-      if (auto Size = Ctx.getTypeSizeInCharsIfKnown(FD->getType()))
+    if (Record && !Record->isInvalidDecl() && !Record->isDependentType()) {
+      if (auto Size = Ctx.getTypeSizeInCharsIfKnown(FD->getType())) {
         HI.Size = Size->getQuantity();
-      if (!FD->isInvalidDecl())
         HI.Offset = Ctx.getFieldOffset(FD) / 8;
+      }
     }
     return;
   }


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