Compiler defaults

Clang

Version	C std	c++ std
20.1.0	gnu17	gnu++17
19.1.0	gnu17	gnu++17
18.1.0	gnu17	gnu++17
17.0.0	gnu17	gnu++17
16.0.0	gnu17	gnu++17
15.0.0	gnu17	gnu++14
14.0.0	gnu17	gnu++14
13.0.0	gnu17	gnu++14
12.0.0	gnu17	gnu++14
11.0.0	gnu17	gnu++14
10.0.0	gnu11	gnu++14
9.0.0	gnu11	gnu++14
8.0.0	gnu11	gnu++14
7.0.0	gnu11	gnu++14
6.0.0	gnu11	gnu++14
5.0.0	gnu11	gnu++98
4.0.0	gnu11	gnu++98

GCC

Version	C std	c++ std
15	gnu23	gnu++17
14	gnu17	gnu++17
13	gnu17	gnu++17
12	gnu17	gnu++17
11	gnu17	gnu++17
10	gnu17	gnu++14
9	gnu17	gnu++14
8	gnu17	gnu++14
7	gnu11	gnu++14
6	gnu11	gnu++14
5	gnu11	gnu++98
4	gnu89	gnu++98