[PATCH] D33207: Fix an assertion failure in FormatASTNodeDiagnosticArgument.

[Alexander Kornienko via Phabricator via cfe-commits]

alexfh added a comment.

The patch is trivial, I'm mostly wondering about the wording and whether we want to expand the "linkage specification" to specify whether it is `extern "C"` or `extern "C++"`, for example.


https://reviews.llvm.org/D33207