2f584229d4
NatVis files describe how to display types in some Windows debuggers,
such as Visual Studio, WinDbg, and VS Code.
This commit makes several improvements:
* Adds visualizers for Rc<T>, Weak<T>, and Arc<T>.
* Changes [size] to [len], for consistency with the Rust API.
Visualizers often use [size] to mirror the size() method on C++ STL
collections.
* Several visualizers used the PVOID and ULONG typedefs. These are part
of the Windows API; they are not guaranteed to always be defined in a
pure Rust DLL/EXE. I converted PVOID to `void*` and `ULONG` to
`unsigned long`.
* Cosmetic change: Removed {} braces around the visualized display
for `Option` types. They now display simply as `Some(value)` or
`None`, which reflects what is written in source code.
* The visualizer for `alloc::string::String` makes assumptions about
the layout of `String` (it casts `String*` to another type), rather
than using symbolic expressions. This commit changes the visualizer
so that it simply uses symbolic expressions to access the string
data and string length.
150 lines
4.5 KiB
Rust
150 lines
4.5 KiB
Rust
// ignore-freebsd: gdb package too new
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// only-cdb // "Temporarily" ignored on GDB/LLDB due to debuginfo tests being disabled, see PR 47155
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// ignore-android: FIXME(#10381)
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// compile-flags:-g
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// min-gdb-version: 7.7
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// min-lldb-version: 310
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// === GDB TESTS ===================================================================================
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// gdb-command: run
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// gdb-command: print slice
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// gdb-check:$1 = &[i32](len: 4) = {0, 1, 2, 3}
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// gdb-command: print vec
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// gdb-check:$2 = Vec<u64, alloc::alloc::Global>(len: 4, cap: [...]) = {4, 5, 6, 7}
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// gdb-command: print str_slice
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// gdb-check:$3 = "IAMA string slice!"
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// gdb-command: print string
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// gdb-check:$4 = "IAMA string!"
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// gdb-command: print some
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// gdb-check:$5 = Some = {8}
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// gdb-command: print none
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// gdbg-check:$6 = None
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// gdbr-check:$6 = core::option::Option::None
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// gdb-command: print os_string
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// gdb-check:$7 = "IAMA OS string 😃"
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// gdb-command: print some_string
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// gdb-check:$8 = Some = {"IAMA optional string!"}
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// gdb-command: set print length 5
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// gdb-command: print some_string
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// gdb-check:$8 = Some = {"IAMA "...}
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// === LLDB TESTS ==================================================================================
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// lldb-command: run
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// lldb-command: print slice
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// lldb-check:[...]$0 = &[0, 1, 2, 3]
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// lldb-command: print vec
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// lldb-check:[...]$1 = vec![4, 5, 6, 7]
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// lldb-command: print str_slice
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// lldb-check:[...]$2 = "IAMA string slice!"
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// lldb-command: print string
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// lldb-check:[...]$3 = "IAMA string!"
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// lldb-command: print some
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// lldb-check:[...]$4 = Some(8)
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// lldb-command: print none
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// lldb-check:[...]$5 = None
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// lldb-command: print os_string
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// lldb-check:[...]$6 = "IAMA OS string 😃"[...]
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// === CDB TESTS ==================================================================================
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// cdb-command: g
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// cdb-command: dx slice,d
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// cdb-check:slice,d [...]
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// NOTE: While slices have a .natvis entry that works in VS & VS Code, it fails in CDB 10.0.18362.1
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// cdb-command: dx vec,d
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// cdb-check:vec,d [...] : { len=4 } [Type: [...]::Vec<u64, alloc::alloc::Global>]
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// cdb-check: [len] : 4 [Type: [...]]
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// cdb-check: [capacity] : [...] [Type: [...]]
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// cdb-check: [0] : 4 [Type: unsigned __int64]
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// cdb-check: [1] : 5 [Type: unsigned __int64]
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// cdb-check: [2] : 6 [Type: unsigned __int64]
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// cdb-check: [3] : 7 [Type: unsigned __int64]
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// cdb-command: dx str_slice
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// cdb-check:str_slice [...]
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// NOTE: While string slices have a .natvis entry that works in VS & VS Code, it fails in CDB
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// cdb-command: dx string
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// cdb-check:string : "IAMA string!" [Type: [...]::String]
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// cdb-check: [<Raw View>] [Type: [...]::String]
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// cdb-check: [len] : 0xc [Type: [...]]
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// cdb-check: [capacity] : 0xc [Type: [...]]
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// cdb-command: dx -r2 string
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// cdb-check: [0] : 73 'I' [Type: char]
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// cdb-check: [1] : 65 'A' [Type: char]
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// cdb-check: [2] : 77 'M' [Type: char]
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// cdb-check: [3] : 65 'A' [Type: char]
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// cdb-check: [4] : 32 ' ' [Type: char]
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// cdb-check: [5] : 115 's' [Type: char]
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// cdb-check: [6] : 116 't' [Type: char]
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// cdb-check: [7] : 114 'r' [Type: char]
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// cdb-check: [8] : 105 'i' [Type: char]
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// cdb-check: [9] : 110 'n' [Type: char]
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// cdb-check: [10] : 103 'g' [Type: char]
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// cdb-check: [11] : 33 '!' [Type: char]
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// cdb-command: dx os_string
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// cdb-check:os_string [Type: [...]::OsString]
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// NOTE: OsString doesn't have a .natvis entry yet.
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// cdb-command: dx some
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// cdb-check:some : Some(8) [Type: [...]::Option<i16>]
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// cdb-command: dx none
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// cdb-check:none : None [Type: [...]::Option<i64>]
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// cdb-command: dx some_string
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// cdb-check:some_string : Some("IAMA optional string!") [[...]::Option<[...]::String>]
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#![allow(unused_variables)]
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use std::ffi::OsString;
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fn main() {
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// &[]
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let slice: &[i32] = &[0, 1, 2, 3];
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// Vec
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let vec = vec![4u64, 5, 6, 7];
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// &str
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let str_slice = "IAMA string slice!";
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// String
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let string = "IAMA string!".to_string();
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// OsString
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let os_string = OsString::from("IAMA OS string \u{1F603}");
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// Option
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let some = Some(8i16);
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let none: Option<i64> = None;
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let some_string = Some("IAMA optional string!".to_owned());
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zzz(); // #break
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}
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fn zzz() { () }
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