From 3ad0181169dc8efcdec7166a76a4624d73bdad48 Mon Sep 17 00:00:00 2001
From: Haojian Wu <hokein.wu@gmail.com>
Date: Tue, 21 Jul 2020 12:11:52 +0200
Subject: [PATCH] [clangd] Fix null check after D82739.

I hit the null-deference crash when opening ASTReaderDecl.cpp.

The BaseType can be a nullptr,
---
 clang-tools-extra/clangd/FindTarget.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/clang-tools-extra/clangd/FindTarget.cpp b/clang-tools-extra/clangd/FindTarget.cpp
index bc4002c..c6022b2 100644
--- a/clang-tools-extra/clangd/FindTarget.cpp
+++ b/clang-tools-extra/clangd/FindTarget.cpp
@@ -175,6 +175,8 @@ std::vector<const NamedDecl *> resolveDependentExprToDecls(const Expr *E) {
     if (ME->isArrow()) {
       BaseType = getPointeeType(BaseType);
     }
+    if (!BaseType)
+      return {};
     if (const auto *BT = BaseType->getAs<BuiltinType>()) {
       // If BaseType is the type of a dependent expression, it's just
       // represented as BultinType::Dependent which gives us no information. We
-- 
2.7.4