================
@@ -556,6 +565,11 @@ static bool ParseDirective(StringRef S, ExpectedData *ED,
SourceManager &SM,
OptionalFileEntryRef File =
PP->LookupFile(Pos, Filename, false, nullptr, nullptr, nullptr,
nullptr, nullptr, nullptr, nullptr, nullptr);
+
+ // Check if the file was virtual
+ if (!File)
+ File = SM.getFileManager().getOptionalFileRef(Filename);
----------------
devajithvs wrote:
We could also have something like this in `HeaderSearch`, but I don't know if
that is ideal:
```diff
diff --git a/clang/lib/Lex/HeaderSearch.cpp b/clang/lib/Lex/HeaderSearch.cpp
index 5f52d62bd36e..795e91673de3 100644
--- a/clang/lib/Lex/HeaderSearch.cpp
+++ b/clang/lib/Lex/HeaderSearch.cpp
@@ -1021,9 +1021,20 @@ OptionalFileEntryRef HeaderSearch::LookupFile(
assert(HFI && "includer without file info");
return HFI->DirInfo != SrcMgr::C_User;
}();
- if (OptionalFileEntryRef FE = getFileAndSuggestModule(
- TmpDir, IncludeLoc, IncluderAndDir.second,
IncluderIsSystemHeader,
- RequestingModule, SuggestedModule)) {
+
+ OptionalFileEntryRef FE = getFileAndSuggestModule(
+ TmpDir, IncludeLoc, IncluderAndDir.second, IncluderIsSystemHeader,
+ RequestingModule, SuggestedModule);
+
+ // Check if it is a virtual file from incremental buffer
+ if (!FE && IncluderAndDir.second.getName() == "." &&
+ Filename.starts_with("input_line_")) {
+ FE = getFileAndSuggestModule(
+ Filename, IncludeLoc, IncluderAndDir.second,
IncluderIsSystemHeader,
+ RequestingModule, SuggestedModule);
+ }
+
+ if (FE) {
diagnoseHeaderShadowing(Filename, FE, DiagnosedShadowing, IncludeLoc,
FromDir, Includers, isAngled,
&IncluderAndDir - Includers.begin(), nullptr);
```
https://github.com/llvm/llvm-project/pull/182044
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