[clang] [Clang] [C++26] Expansion Statements (Part 1: AST) (PR #169680)

[via cfe-commits]

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@@ -196,6 +196,16 @@ class Scope {
   /// declared in this scope.
   unsigned short PrototypeIndex;
 
+  /// IsExpansionStmtScope - This is the scope corresponding to a C++26
+  /// expansion statement.
+  ///
+  /// FIXME: This should be part of ScopeFlags, but we're out of bits, so we
+  /// need to update every place that uses 'unsigned' to hold scope flags. We
+  /// should probably redefine ScopeFlags as an 'enum class : uint64_t' and
+  /// use LLVM_MARK_AS_BITMASK_ENUM() and friends so we can continue to '|'
+  /// scope flags together.
+  bool IsExpansionStmtScope;
+
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Sirraide wrote:

I mean, I can look into that I suppose, but not sure how much work that would end up being

https://github.com/llvm/llvm-project/pull/169680