[clang] 46b9d57 - Return early if FileID is invalid. NFC

[Akira Hatanaka via cfe-commits]

Author: Akira Hatanaka
Date: 2022-12-14T21:28:31-08:00
New Revision: 46b9d57976517f61d7478104cc95946d1bc03bf0

URL: https://github.com/llvm/llvm-project/commit/46b9d57976517f61d7478104cc95946d1bc03bf0
DIFF: https://github.com/llvm/llvm-project/commit/46b9d57976517f61d7478104cc95946d1bc03bf0.diff

LOG: Return early if FileID is invalid. NFC

Added: 
    

Modified: 
    clang/lib/Frontend/HeaderIncludeGen.cpp

Removed: 
    


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diff  --git a/clang/lib/Frontend/HeaderIncludeGen.cpp b/clang/lib/Frontend/HeaderIncludeGen.cpp
index 30fe5c75b9ac3..2ab4809402645 100644
--- a/clang/lib/Frontend/HeaderIncludeGen.cpp
+++ b/clang/lib/Frontend/HeaderIncludeGen.cpp
@@ -291,7 +291,8 @@ static bool shouldRecordNewFile(SrcMgr::CharacteristicKind NewFileType,
 void HeaderIncludesJSONCallback::FileChanged(
     SourceLocation Loc, FileChangeReason Reason,
     SrcMgr::CharacteristicKind NewFileType, FileID PrevFID) {
-  if (!shouldRecordNewFile(NewFileType, SM.getLocForStartOfFile(PrevFID), SM))
+  if (PrevFID.isInvalid() ||
+      !shouldRecordNewFile(NewFileType, SM.getLocForStartOfFile(PrevFID), SM))
     return;
 
   // Unless we are exiting a #include, make sure to skip ahead to the line the