[include-cleaner] Make sure exports of stdlib also works for physical files (#72246)

This was creating discrepancy in cases where we might have a physical
file entry (e.g. because we followed a source location from a stdlib
file) and tried to find its exporters.

2 files changed, 6 insertions, 14 deletions

diff --git a/clang-tools-extra/include-cleaner/lib/Record.cpp b/clang-tools-extra/include-cleaner/lib/Record.cpp
index 7a8e10a..6e00ff9 100644
--- a/clang-tools-extra/include-cleaner/lib/Record.cpp
+++ b/clang-tools-extra/include-cleaner/lib/Record.cpp
@@ -240,20 +240,10 @@ public:
     // Make sure current include is covered by the export pragma.
     if ((Top.Block && HashLine > Top.SeenAtLine) ||
         Top.SeenAtLine == HashLine) {
-      if (IncludedHeader) {
-        switch (IncludedHeader->kind()) {
-        case Header::Physical:
-          Out->IWYUExportBy[IncludedHeader->physical().getUniqueID()]
-              .push_back(Top.Path);
-          break;
-        case Header::Standard:
-          Out->StdIWYUExportBy[IncludedHeader->standard()].push_back(Top.Path);
-          break;
-        case Header::Verbatim:
-          assert(false && "unexpected Verbatim header");
-          break;
-        }
-      }
+      if (IncludedFile)
+        Out->IWYUExportBy[IncludedFile->getUniqueID()].push_back(Top.Path);
+      if (IncludedHeader && IncludedHeader->kind() == Header::Standard)
+        Out->StdIWYUExportBy[IncludedHeader->standard()].push_back(Top.Path);
       // main-file #include with export pragma should never be removed.
       if (Top.SeenAtFile == SM.getMainFileID() && IncludedFile)
         Out->ShouldKeep.insert(IncludedFile->getUniqueID());
diff --git a/clang-tools-extra/include-cleaner/unittests/RecordTest.cpp b/clang-tools-extra/include-cleaner/unittests/RecordTest.cpp
index 3685073..dfefa66 100644
--- a/clang-tools-extra/include-cleaner/unittests/RecordTest.cpp
+++ b/clang-tools-extra/include-cleaner/unittests/RecordTest.cpp
@@ -452,6 +452,8 @@ TEST_F(PragmaIncludeTest, IWYUExportForStandardHeaders) {
   auto &FM = Processed.fileManager();
   EXPECT_THAT(PI.getExporters(*tooling::stdlib::Header::named("<string>"), FM),
               testing::UnorderedElementsAre(FileNamed("export.h")));
+  EXPECT_THAT(PI.getExporters(llvm::cantFail(FM.getFileRef("string")), FM),
+              testing::UnorderedElementsAre(FileNamed("export.h")));
 }
 
 TEST_F(PragmaIncludeTest, IWYUExportBlock) {