[PATCH] D102001: [Index] Ignore nullptr decls for indexing

[Alex Hoppen via Phabricator via cfe-commits]

ahoppen created this revision.
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We can end up with a call to `indexTopLevelDecl(D)` with `D == nullptr` in non-assert builds e.g. when indexing a module in `indexModule` and

- `ASTReader::GetDecl` returns `nullptr` if `Index >= DeclsLoaded.size()`, thus returning `nullptr`

> `ModuleDeclIterator::operator*` returns `nullptr`
===================================================

> we call `IndexCtx.indexTopLevelDecl` with `nullptr`
=====================================================

Be resilient and just ignore the `nullptr` decls during indexing.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D102001

Files:
  clang/lib/Index/IndexDecl.cpp


Index: clang/lib/Index/IndexDecl.cpp
===================================================================
--- clang/lib/Index/IndexDecl.cpp
+++ clang/lib/Index/IndexDecl.cpp
@@ -759,7 +759,7 @@
 }
 
 bool IndexingContext::indexTopLevelDecl(const Decl *D) {
-  if (D->getLocation().isInvalid())
+  if (!D || D->getLocation().isInvalid())
     return true;
 
   if (isa<ObjCMethodDecl>(D))


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