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-rw-r--r--clang/lib/Serialization/ASTWriter.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/Serialization/ASTWriter.cpp b/clang/lib/Serialization/ASTWriter.cpp
index 8dbd6e44715..66e5d6a625e 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -3860,6 +3860,9 @@ void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
// We only keep track of the file-level declarations of each file.
if (!D->getLexicalDeclContext()->isFileContext())
return;
+ // FIXME: We should never have ParmVarDecls with TU as context.
+ if (isa<ParmVarDecl>(D))
+ return;
SourceManager &SM = Context->getSourceManager();
SourceLocation FileLoc = SM.getFileLoc(Loc);
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