================
@@ -3115,7 +3115,19 @@ class FieldDecl : public DeclaratorDecl, public
Mergeable<FieldDecl> {
/// Returns the index of this field within its record,
/// as appropriate for passing to ASTRecordLayout::getFieldOffset.
- unsigned getFieldIndex() const;
+ unsigned getFieldIndex() const {
+ const FieldDecl *C = getCanonicalDecl();
+ if (C->CachedFieldIndex == 0)
----------------
rnk wrote:
I'm reasonably confident that that is the case, every canonical decl in the
declaration chain is the same at any point in time. I think the surprising
thing about canonical declarations is that they can *change* when modules are
lazily loaded, and that has bit me in the past when attempting to apply
attributes to canonical declarations.
https://github.com/llvm/llvm-project/pull/122029
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