================
@@ -2305,6 +2308,36 @@ APValue SourceLocExpr::EvaluateInContext(const
ASTContext &Ctx,
};
switch (getIdentKind()) {
+ case SourceLocIdentKind::VariableName: {
+ // __builtin_VARIABLE_NAME() is a Clang-specific extension that expands to
+ // the name of the variable being defined in a CXXDefaultArgExpr.
+
+ // FIXME: The AST doesn't have upward edges, so we can't easily traverse up
+ // from the CXXDefaultArgExpr to find it. Unfortunately, this means we
need
+ // to do a linear scan of (up to) the entire FunctionDecl.
----------------
jroelofs wrote:
I could use some help here. Using the visitor to walk back up the AST feels
wrong / slow.
https://github.com/llvm/llvm-project/pull/86756
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