================
@@ -4692,6 +4692,17 @@ bool Sema::InstantiateDefaultArgument(SourceLocation
CallLoc, FunctionDecl *FD,
ParmVarDecl *Param) {
assert(Param->hasUninstantiatedDefaultArg());
+ // FIXME: We don't track member specialization info for non-defining
+ // friend declarations, so we will not be able to later find the function
+ // pattern. As a workaround, don't instantiate the default argument in this
+ // case. This is correct per wording and only an error recovery issue, as per
----------------
cor3ntin wrote:
I'm not even sure the fixme is worth it here. We already produce an error,
another one would not be particularly useful or worth the refactoring cost
@erichkeane
https://github.com/llvm/llvm-project/pull/115487
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