[clang] [clang] Cleanup IncludeLocMap (PR #106241)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: kadir çetinkaya (kadircet)

<details>
<summary>Changes</summary>

CompilerInstance can re-use same SourceManager across multiple
frontendactions. During this process it calls
`SourceManager::clearIDTables` to reset any caches based on FileIDs.

It didn't reset IncludeLocMap, resulting in wrong include locations for
workflows that triggered multiple frontend-actions through same
CompilerInstance.


---
Full diff: https://github.com/llvm/llvm-project/pull/106241.diff


1 Files Affected:

- (modified) clang/lib/Basic/SourceManager.cpp (+1) 


``````````diff
diff --git a/clang/lib/Basic/SourceManager.cpp b/clang/lib/Basic/SourceManager.cpp
index b0256a8ce9ed04..d6ec26af80aadd 100644
--- a/clang/lib/Basic/SourceManager.cpp
+++ b/clang/lib/Basic/SourceManager.cpp
@@ -350,6 +350,7 @@ void SourceManager::clearIDTables() {
   LastLineNoContentCache = nullptr;
   LastFileIDLookup = FileID();
 
+  IncludedLocMap.clear();
   if (LineTable)
     LineTable->clear();
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/106241