rust/tests/debuginfo/option-like-enum.rs

//@ min-lldb-version: 1800
//@ min-gdb-version: 13.0

//@ compile-flags:-g

// === GDB TESTS ===================================================================================

// gdb-command:run

// gdb-command:print some
// gdb-check:$1 = core::option::Option<&u32>::Some(0x12345678)

// gdb-command:print none
// gdb-check:$2 = core::option::Option<&u32>::None

// gdb-command:print full
// gdb-check:$3 = option_like_enum::MoreFields::Full(454545, 0x87654321, 9988)

// gdb-command:print empty_gdb.discr
// gdb-check:$4 = (*mut isize) 0x1

// gdb-command:print droid
// gdb-check:$5 = option_like_enum::NamedFields::Droid{id: 675675, range: 10000001, internals: 0x43218765}

// gdb-command:print void_droid_gdb.internals
// gdb-check:$6 = (*mut isize) 0x1

// gdb-command:print nested_non_zero_yep
// gdb-check:$7 = option_like_enum::NestedNonZero::Yep(10.5, option_like_enum::NestedNonZeroField {a: 10, b: 20, c: 0x[...]})

// gdb-command:print nested_non_zero_nope
// gdb-check:$8 = option_like_enum::NestedNonZero::Nope

// gdb-command:continue


// === LLDB TESTS ==================================================================================

// lldb-command:run

// lldb-command:v some
// lldb-check:[...] Some(&0x12345678)

// lldb-command:v none
// lldb-check:[...] None

// lldb-command:v full
// lldb-check:[...] Full(454545, &0x87654321, 9988)

// lldb-command:v empty
// lldb-check:[...] Empty

// lldb-command:v droid
// lldb-check:[...] Droid { id: 675675, range: 10000001, internals: &0x43218765 }

// lldb-command:v void_droid
// lldb-check:[...] Void

// lldb-command:v some_str
// lldb-check:[...] Some("abc")

// lldb-command:v none_str
// lldb-check:[...] None

// lldb-command:v nested_non_zero_yep
// lldb-check:[...] Yep(10.5, NestedNonZeroField { a: 10, b: 20, c: &[...] })

// lldb-command:v nested_non_zero_nope
// lldb-check:[...] Nope


#![feature(omit_gdb_pretty_printer_section)]
#![omit_gdb_pretty_printer_section]

// If a struct has exactly two variants, one of them is empty, and the other one
// contains a non-nullable pointer, then this value is used as the discriminator.
// The test cases in this file make sure that something readable is generated for
// this kind of types.
// If the non-empty variant contains a single non-nullable pointer than the whole
// item is represented as just a pointer and not wrapped in a struct.
// Unfortunately (for these test cases) the content of the non-discriminant fields
// in the null-case is not defined. So we just read the discriminator field in
// this case (by casting the value to a memory-equivalent struct).

enum MoreFields<'a> {
    Full(u32, &'a isize, i16),
    Empty
}

struct MoreFieldsRepr<'a> {
    a: u32,
    discr: &'a isize,
    b: i16
}

enum NamedFields<'a> {
    Droid { id: i32, range: i64, internals: &'a isize },
    Void
}

struct NamedFieldsRepr<'a> {
    id: i32,
    range: i64,
    internals: &'a isize
}

struct NestedNonZeroField<'a> {
    a: u16,
    b: u32,
    c: &'a char,
}

enum NestedNonZero<'a> {
    Yep(f64, NestedNonZeroField<'a>),
    Nope
}

fn main() {

    let some_str: Option<&'static str> = Some("abc");
    let none_str: Option<&'static str> = None;

    let some: Option<&u32> = Some(unsafe { std::mem::transmute(0x12345678_usize) });
    let none: Option<&u32> = None;

    let full = MoreFields::Full(454545, unsafe { std::mem::transmute(0x87654321_usize) }, 9988);

    let empty = MoreFields::Empty;
    let empty_gdb: &MoreFieldsRepr = unsafe { std::mem::transmute(&MoreFields::Empty) };

    let droid = NamedFields::Droid {
        id: 675675,
        range: 10000001,
        internals: unsafe { std::mem::transmute(0x43218765_usize) }
    };

    let void_droid = NamedFields::Void;
    let void_droid_gdb: &NamedFieldsRepr = unsafe { std::mem::transmute(&NamedFields::Void) };

    let x = 'x';
    let nested_non_zero_yep = NestedNonZero::Yep(
        10.5,
        NestedNonZeroField {
            a: 10,
            b: 20,
            c: &x
        });

    let nested_non_zero_nope = NestedNonZero::Nope;

    zzz(); // #break
}

fn zzz() {()}