From def3dd24b0db402a6592dc91f1b394861119618c Mon Sep 17 00:00:00 2001
From: Alex Hoppen <ahoppen@apple.com>
Date: Mon, 24 Nov 2025 12:00:02 +0100
Subject: [PATCH] Add pretty stack trace entry during indexing

In case we hit a crash during indexing, this will make it easier to identify the crash as coming from indexing vs from compilation.
---
 clang/lib/Index/IndexingAction.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/clang/lib/Index/IndexingAction.cpp b/clang/lib/Index/IndexingAction.cpp
index 25212ac6afb00..078f3a5c9dbbc 100644
--- a/clang/lib/Index/IndexingAction.cpp
+++ b/clang/lib/Index/IndexingAction.cpp
@@ -604,6 +604,7 @@ class IndexRecordASTConsumer : public ASTConsumer {
   }
 
   bool HandleTopLevelDecl(DeclGroupRef DG) override {
+    llvm::PrettyStackTraceFormat trace("indexing");
     return IndexCtx->indexDeclGroupRef(DG);
   }
 
@@ -612,6 +613,7 @@ class IndexRecordASTConsumer : public ASTConsumer {
   }
 
   void HandleTopLevelDeclInObjCContainer(DeclGroupRef DG) override {
+    llvm::PrettyStackTraceFormat trace("indexing");
     IndexCtx->indexDeclGroupRef(DG);
   }