Ken Matsui a1545f51a9 Warn if using elifdef & elifndef in not C2x & C++2b mode
This adds an extension warning when using the preprocessor conditionals
in a language mode they're not officially supported in, and an opt-in
warning for compatibility with previous standards.

Fixes #55306
Differential Revision: https://reviews.llvm.org/D125178
2022-05-12 09:26:44 -04:00
..

//===----------------------------------------------------------------------===//
// C Language Family Front-end
//===----------------------------------------------------------------------===//

Welcome to Clang.  This is a compiler front-end for the C family of languages
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