rust/tests/debuginfo/strings-and-strs.rs
Jacob Pratt 307f1609e9
Rollup merge of #135354 - Walnut356:msvc_lldb, r=wesleywiser
[Debuginfo] Add MSVC Synthetic and Summary providers to LLDB

Adds handling for `tuple$<>`, `ref$<slice$2<>`, `ref$<str$>` and `enum2$<>`.

Also fixes a bug in MSVC vec/string handling where the script was unable to determine the element's type due to LLDB ignoring template arg debug information

<details>
<summary>Sample code</summary>

```rust
pub enum Number {
    One = 57,
    Two = 99,
}

#[repr(u8)]
pub enum Container {
    First(u32),
    Second { val: u64, val2: i8 },
    Third,
}

...
    let u8_val = b'a';
    let float = 42.78000000000001;

    let tuple = (u8_val, float);

    let str_val = "eef";
    let mut string = "freef".to_owned();
    let mut_str = string.as_mut_str();
    let array: [u8; 4] = [1, 2, 3, 4];
    let ref_array = array.as_slice();
    let mut array2: [u32; 4] = [1, 2, 3, 4];
    let mut_array = array2.as_mut_slice();
    let enum_val = Number::One;
    let mut enum_val2 = Number::Two;
    let sum_val = Container::First(15);
    let sum_val_2 = Container::Second { val: 0, val2: 0 };
    let sum_val_3 = Container::Third;
    let non_zero = NonZeroU128::new(100).unwrap();
    let large_discr = NonZeroU128::new(255);
```
</details>

Before:

![image](https://github.com/user-attachments/assets/19fd0881-a4c3-4c68-b28f-769a67d95e35)

After:

![image](https://github.com/user-attachments/assets/d0479035-17ed-4584-8eb4-71d1314f8f7c)

try-job: aarch64-apple
try-job: x86_64-msvc-1
try-job: i686-msvc-1
try-job: x86_64-mingw-1
try-job: i686-mingw
try-job: aarch64-gnu
2025-02-23 02:44:16 -05:00

62 lines
2.6 KiB
Rust

//@ min-gdb-version: 14.0
//@ min-lldb-version: 1800
//@ compile-flags:-g
// === GDB TESTS ===================================================================================
// gdb-command:run
// gdb-command:print plain_string
// gdb-check:$1 = alloc::string::String {vec: alloc::vec::Vec<u8, alloc::alloc::Global> {buf: alloc::raw_vec::RawVec<u8, alloc::alloc::Global> {inner: alloc::raw_vec::RawVecInner<alloc::alloc::Global> {ptr: core::ptr::unique::Unique<u8> {pointer: core::ptr::non_null::NonNull<u8> {pointer: 0x[...]}, _marker: core::marker::PhantomData<u8>}, cap: core::num::niche_types::UsizeNoHighBit (5), alloc: alloc::alloc::Global}, _marker: core::marker::PhantomData<u8>}, len: 5}}
// gdb-command:print plain_str
// gdb-check:$2 = "Hello"
// gdb-command:print str_in_struct
// gdb-check:$3 = strings_and_strs::Foo {inner: "Hello"}
// gdb-command:print str_in_tuple
// gdb-check:$4 = ("Hello", "World")
// gdb-command:print str_in_rc
// gdb-check:$5 = alloc::rc::Rc<&str, alloc::alloc::Global> {ptr: core::ptr::non_null::NonNull<alloc::rc::RcInner<&str>> {pointer: 0x[...]}, phantom: core::marker::PhantomData<alloc::rc::RcInner<&str>>, alloc: alloc::alloc::Global}
// === LLDB TESTS ==================================================================================
// lldb-command:run
// lldb-command:v plain_string
// lldb-check:(alloc::string::String) plain_string = "Hello" { [0] = 'H' [1] = 'e' [2] = 'l' [3] = 'l' [4] = 'o' }
// lldb-command:v plain_str
// lldb-check:(&str) plain_str = "Hello" { [0] = 'H' [1] = 'e' [2] = 'l' [3] = 'l' [4] = 'o' }
// lldb-command:v str_in_struct
// lldb-check:((&str, &str)) str_in_tuple = { 0 = "Hello" { [0] = 'H' [1] = 'e' [2] = 'l' [3] = 'l' [4] = 'o' } 1 = "World" { [0] = 'W' [1] = 'o' [2] = 'r' [3] = 'l' [4] = 'd' } }
// lldb-command:v str_in_tuple
// lldb-check:((&str, &str)) str_in_tuple = { 0 = "Hello" { [0] = 'H' [1] = 'e' [2] = 'l' [3] = 'l' [4] = 'o' } 1 = "World" { [0] = 'W' [1] = 'o' [2] = 'r' [3] = 'l' [4] = 'd' } }
// lldb-command:v str_in_rc
// lldb-check:(alloc::rc::Rc<&str, alloc::alloc::Global>) str_in_rc = strong=1, weak=0 { value = "Hello" { [0] = 'H' [1] = 'e' [2] = 'l' [3] = 'l' [4] = 'o' } }
#![allow(unused_variables)]
#![feature(omit_gdb_pretty_printer_section)]
#![omit_gdb_pretty_printer_section]
pub struct Foo<'a> {
inner: &'a str,
}
fn main() {
let plain_string = String::from("Hello");
let plain_str = "Hello";
let str_in_struct = Foo { inner: "Hello" };
let str_in_tuple = ("Hello", "World");
let str_in_rc = std::rc::Rc::new("Hello");
zzz(); // #break
}
fn zzz() {
()
}