[PATCH] D46234: Mark if a null statement is the result of constexpr folding

[Gábor Horváth via Phabricator via cfe-commits]

xazax.hun added a comment.

In https://reviews.llvm.org/D46234#1082307, @rsmith wrote:

> Can you say something about why you want to track this?


The original motivation was to fix this false positive in clang tidy: https://reviews.llvm.org/D46027

> Perhaps we should just use a null pointer for the not-instantiated arm of an `if constexpr` instead, rather than tracking a flag on an empty statement that is meaningless for real empty statements.

I will look into that, thanks. I wonder if any of the code assumes that the than branch always present.


Repository:
  rC Clang

https://reviews.llvm.org/D46234