zig/test/standalone/mix_o_files/base64.zig

const base64 = @import("std").base64;

export fn decode_base_64(dest_ptr: [*]u8, dest_len: usize, source_ptr: [*]const u8, source_len: usize) usize {
    const src = source_ptr[0..source_len];
    const dest = dest_ptr[0..dest_len];
    const base64_decoder = base64.standard.Decoder;
    const decoded_size = base64_decoder.calcSizeForSlice(src) catch unreachable;
    base64_decoder.decode(dest[0..decoded_size], src) catch unreachable;
    return decoded_size;
}

var x: c_int = 1234;
export var x_ptr = &x;