master
 1fn foo(...) void {}
 2inline fn foo2(...) void {}
 3
 4comptime {
 5    _ = foo;
 6}
 7comptime {
 8    _ = foo2;
 9}
10
11// error
12// target=x86_64-linux
13//
14// :1:8: error: variadic function does not support 'auto' calling convention
15// :1:8: note: supported calling conventions: 'x86_64_sysv', 'x86_64_x32', 'x86_64_win'
16// :2:16: error: variadic function does not support 'inline' calling convention
17// :2:16: note: supported calling conventions: 'x86_64_sysv', 'x86_64_x32', 'x86_64_win'