Zig 0.17.0-dev (Split by item)

This is an example of documentation generated by ZigDoc, an alternative to Zig's built-in Auto Doc feature. See also examples in other modes/formats. The project being documented here (as the example) is the Zig library itself.

wrapMain

start.wrapMain

inline fn wrapMain(result: anytype) u8

File

lib/std/start.zig:804

Code

inline fn wrapMain(result: anytype) u8 {
    const ReturnType = @TypeOf(result);
    switch (ReturnType) {
        void => return 0,
        noreturn => unreachable,
        u8 => return result,
        else => {},
    }
    if (@typeInfo(ReturnType) != .error_union) @compileError(bad_main_ret);

    const unwrapped_result = result catch |err| {
        std.log.err("{t}", .{err});
        switch (native_os) {
            .freestanding, .other => {},
            else => if (@errorReturnTrace()) |trace| std.debug.dumpErrorReturnTrace(trace),
        }
        return 1;
    };

    return switch (@TypeOf(unwrapped_result)) {
        noreturn => unreachable,
        void => 0,
        u8 => unwrapped_result,
        else => @compileError(bad_main_ret),
    };
}