diff --git a/clang-tools-extra/clangd/test/repeated_includes.test b/clang-tools-extra/clangd/test/repeated_includes.test
new file mode 100644
--- /dev/null
+++ b/clang-tools-extra/clangd/test/repeated_includes.test
@@ -0,0 +1,33 @@
+# RUN: rm -rf %/t
+# RUN: mkdir -p %t && touch %t/t.h && touch %t/t2.h && touch %t/t3.h
+# RUN: echo '#pragma once' > %t/t.h
+# RUN: echo '#include "t2.h"' >> %t/t.h
+# RUN: echo 'void bar();' >> %t/t.h
+# RUN: echo '#pragma once' > %t/t2.h
+# RUN: echo 'void bar2();' >> %t/t2.h
+
+
+# Run clangd
+# RUN: clangd -lit-test -log error --path-mappings 'C:\client=%t' < %s | FileCheck -strict-whitespace %s
+{"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":123,"rootPath":"clangd","capabilities":{},"trace":"off"}}
+---
+{"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///C:/client/main.cpp","languageId":"cpp","version":1,"text":"#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\n#include \"t.h\"\nbar();\n"}}}
+---
+{"jsonrpc":"2.0","id":1,"method":"textDocument/completion","params":{"textDocument":{"uri":"file:///C:/client/main.cpp"},"position":{"line":40,"character":3}}}
+#      CHECK:  "id": 1
+# CHECK-NEXT:  "jsonrpc": "2.0",
+# CHECK-NEXT:  "result": {
+# CHECK-NEXT:    "isIncomplete": false,
+# CHECK-NEXT:    "items": [
+# CHECK-NEXT:      {
+# CHECK-NEXT:        "detail": "void",
+# CHECK-NEXT:        "documentation": {
+# CHECK-NEXT:          "kind": "plaintext",
+# CHECK-NEXT:          "value": "From \"t.h\""
+# CHECK-NEXT:        },
+# CHECK-NEXT:        "filterText": "bar",
+# CHECK-NEXT:        "insertText": "bar",
+---
+{"jsonrpc":"2.0","id":4,"method":"shutdown"}
+---
+{"jsonrpc":"2.0","method":"exit"}
diff --git a/clang/include/clang/Tooling/Inclusions/HeaderIncludes.h b/clang/include/clang/Tooling/Inclusions/HeaderIncludes.h
--- a/clang/include/clang/Tooling/Inclusions/HeaderIncludes.h
+++ b/clang/include/clang/Tooling/Inclusions/HeaderIncludes.h
@@ -105,8 +105,7 @@
   /// in the order they appear in the source file.
   /// See comment for "FormatStyle::IncludeCategories" for details about include
   /// priorities.
-  std::unordered_map<int, llvm::SmallVector<const Include *, 8>>
-      IncludesByPriority;
+  std::unordered_map<int, llvm::SmallVector<Include, 8>> IncludesByPriority;
 
   int FirstIncludeOffset;
   // All new headers should be inserted after this offset (e.g. after header
diff --git a/clang/lib/Tooling/Inclusions/HeaderIncludes.cpp b/clang/lib/Tooling/Inclusions/HeaderIncludes.cpp
--- a/clang/lib/Tooling/Inclusions/HeaderIncludes.cpp
+++ b/clang/lib/Tooling/Inclusions/HeaderIncludes.cpp
@@ -333,7 +333,7 @@
     int Priority = Categories.getIncludePriority(
         CurInclude.Name, /*CheckMainHeader=*/FirstIncludeOffset < 0);
     CategoryEndOffsets[Priority] = NextLineOffset;
-    IncludesByPriority[Priority].push_back(&CurInclude);
+    IncludesByPriority[Priority].push_back(CurInclude);
     if (FirstIncludeOffset < 0)
       FirstIncludeOffset = CurInclude.R.getOffset();
   }
@@ -361,9 +361,9 @@
   unsigned InsertOffset = CatOffset->second; // Fall back offset
   auto Iter = IncludesByPriority.find(Priority);
   if (Iter != IncludesByPriority.end()) {
-    for (const auto *Inc : Iter->second) {
-      if (QuotedName < Inc->Name) {
-        InsertOffset = Inc->R.getOffset();
+    for (const auto &Inc : Iter->second) {
+      if (QuotedName < Inc.Name) {
+        InsertOffset = Inc.R.getOffset();
         break;
       }
     }