What's the status of C++17 support in GCC?

Question

Clang has a nice page describing the project status w.r.t. C++1z/C++17 feature support (and C++11 and C++14, it\'s the same page).

g++ has a page regarding C++14 feature

Answer 1

Updated final nutshell answer:

• GCC 8.x (and later) fully supports all of C++17.
• GCC 7.x supports all of C++17 except for class template argument deduction.
• GCC 6.x (and earlier) has little or no support for C++17 features.

Thanks @JanVanDijk for the link to the full feature table.