tree 0943f4009bfc37f418d2e74dc6d2313095532f62
parent 8d22f25d155113f9cfdf3952dc49088c820f2a77
author Reid Kleckner <rnk@google.com> 1611773968 -0800
committer Tom Stellard <tstellar@redhat.com> 1611794041 -0800

Revert "Suppress non-conforming GNU paste extension in all standard-conforming modes"

This reverts commit f4537935dcdbf390c863591cf556e76c3abab9c1.
This reverts commit b43c26d036dcbf7a6881f39e4434cf059364022a.

This GNU and MSVC extension turns out to be very popular. Most projects
are not using C++20, so cannot use the new __VA_OPT__ feature to be
standards conformant. The other workaround, using -std=gnu*, enables too
many language extensions and isn't viable.

Until there is a way for users to get the behavior provided by the
`, ## __VA_ARGS__` extension in the -std=c++17 and earlier language
modes, we need to revert this.

(cherry picked from commit 61a66e4b5ec18e9e73c2f6334f6b7f7dd4bca77e)