construct a va_list and pass it to a c function

[near oyster]

i would like to do something like (from zig) c.vprintf(fmt, va_list) how can i construct a valid va list in zig?

how can i construct an instance of this struct?

[finite nest]

You are not meant to create it from scratch

but get it from a function

    pub fn someFunction(fmt: [*:0]u8, ...) callconv(.C) void {
        var vaList = @cVaStart();
        var copy = @cVaCopy(&vaList);
        std.c.vprintf(fmt, copy);
        @cVaEnd(&vaList);
}

Dunno if the copy is needed

buuut

yea

note this uses a variadic function definition, and that is only valid iirc from a C calling convention function

[near oyster]

but what if i need to dynamically create one?

[finite nest]

why would you need this

[tawny palm]

dynamically constructing a va_list just isn't really a directly supported use case afaik

how you would do it entirely depends on the particular C ABI