[clang] [llvm] [Clang] Show inlining hints for __attribute__((warning/error)) (PR #174892)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

> I'm fine with the off-by-default option.

I'm also okay with that approach. We can enable by default in the future if we feel it's justified, but going the opposite direction is much harder.

https://github.com/llvm/llvm-project/pull/174892