kbobyrev updated this revision to Diff 379317.
kbobyrev added a comment.

Mention the ScratchBuffer explicitly in the test.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D111698/new/

https://reviews.llvm.org/D111698

Files:
  clang-tools-extra/clangd/IncludeCleaner.cpp
  clang-tools-extra/clangd/unittests/IncludeCleanerTests.cpp


Index: clang-tools-extra/clangd/unittests/IncludeCleanerTests.cpp
===================================================================
--- clang-tools-extra/clangd/unittests/IncludeCleanerTests.cpp
+++ clang-tools-extra/clangd/unittests/IncludeCleanerTests.cpp
@@ -167,6 +167,29 @@
               UnorderedElementsAre("\"unused.h\"", "\"dir/unused.h\""));
 }
 
+TEST(IncludeCleaner, MacroPastingOperator) {
+  TestTU TU;
+  TU.Filename = "foo.cpp";
+  TU.Code = R"cpp(
+    #include "macro_pasting_operator.h"
+
+    using flags::FLAGS_FOO;
+    )cpp";
+  // The pasting operator in combination with DEFINE_FLAG will create
+  // ScratchBuffer with `flags::FLAGS_FOO` that will have FileID but not
+  // FileEntry.
+  TU.AdditionalFiles["macro_pasting_operator.h"] = R"cpp(
+    #define DEFINE_FLAG(X) \
+    namespace flags { \
+    int FLAGS_##X; \
+    } \
+
+    DEFINE_FLAG(FOO)
+    )cpp";
+  ParsedAST AST = TU.build();
+  EXPECT_THAT(computeUnusedIncludes(AST), testing::IsEmpty());
+}
+
 } // namespace
 } // namespace clangd
 } // namespace clang
Index: clang-tools-extra/clangd/IncludeCleaner.cpp
===================================================================
--- clang-tools-extra/clangd/IncludeCleaner.cpp
+++ clang-tools-extra/clangd/IncludeCleaner.cpp
@@ -121,7 +121,8 @@
     if (!Macros.insert(FID).second)
       return;
     const auto &Exp = SM.getSLocEntry(FID).getExpansion();
-    add(Exp.getSpellingLoc());
+    if (!SM.isWrittenInScratchSpace(Exp.getSpellingLoc()))
+      add(Exp.getSpellingLoc());
     add(Exp.getExpansionLocStart());
     add(Exp.getExpansionLocEnd());
   }


Index: clang-tools-extra/clangd/unittests/IncludeCleanerTests.cpp
===================================================================
--- clang-tools-extra/clangd/unittests/IncludeCleanerTests.cpp
+++ clang-tools-extra/clangd/unittests/IncludeCleanerTests.cpp
@@ -167,6 +167,29 @@
               UnorderedElementsAre("\"unused.h\"", "\"dir/unused.h\""));
 }
 
+TEST(IncludeCleaner, MacroPastingOperator) {
+  TestTU TU;
+  TU.Filename = "foo.cpp";
+  TU.Code = R"cpp(
+    #include "macro_pasting_operator.h"
+
+    using flags::FLAGS_FOO;
+    )cpp";
+  // The pasting operator in combination with DEFINE_FLAG will create
+  // ScratchBuffer with `flags::FLAGS_FOO` that will have FileID but not
+  // FileEntry.
+  TU.AdditionalFiles["macro_pasting_operator.h"] = R"cpp(
+    #define DEFINE_FLAG(X) \
+    namespace flags { \
+    int FLAGS_##X; \
+    } \
+
+    DEFINE_FLAG(FOO)
+    )cpp";
+  ParsedAST AST = TU.build();
+  EXPECT_THAT(computeUnusedIncludes(AST), testing::IsEmpty());
+}
+
 } // namespace
 } // namespace clangd
 } // namespace clang
Index: clang-tools-extra/clangd/IncludeCleaner.cpp
===================================================================
--- clang-tools-extra/clangd/IncludeCleaner.cpp
+++ clang-tools-extra/clangd/IncludeCleaner.cpp
@@ -121,7 +121,8 @@
     if (!Macros.insert(FID).second)
       return;
     const auto &Exp = SM.getSLocEntry(FID).getExpansion();
-    add(Exp.getSpellingLoc());
+    if (!SM.isWrittenInScratchSpace(Exp.getSpellingLoc()))
+      add(Exp.getSpellingLoc());
     add(Exp.getExpansionLocStart());
     add(Exp.getExpansionLocEnd());
   }
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