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Add gdb pretty printers for slices types (&[T] and &mut [T]). #85219

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EFanZh opened this issue May 12, 2021 · 3 comments · Fixed by #85363
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Add gdb pretty printers for slices types (&[T] and &mut [T]). #85219

EFanZh opened this issue May 12, 2021 · 3 comments · Fixed by #85363
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A-slice Area: [T] C-enhancement Category: An issue proposing an enhancement or a PR with one. T-dev-tools Relevant to the dev-tools subteam, which will review and decide on the PR/issue.

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@EFanZh
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EFanZh commented May 12, 2021 •
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Currently, support for pretty-printing slice types is missing for rust-gdb.
@DaviRain-Su
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Can you describe in more detail?

@EFanZh
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EFanZh commented May 12, 2021 •
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rust-gdb provides pretty-printing function for some Rust types, such as &str, Vec, HashMap, etc. This allows gdb to display values of some types in a more readable way. I think it is implemented in the following files:

Currently, slices can only be displayed as a pointer and a length value in the debugger. I hope rust-gdb can support displaying slices.

I also noticed that rust-lldb already supports pretty-printing const slices (&[T]), but not mutable slices (&mut [T]). Maybe rust-lldb can also add pretty-printing support fur mutable slices.

@EFanZh EFanZh mentioned this issue May 16, 2021
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JohnTitor added a commit to JohnTitor/rust that referenced this issue May 26, 2021
@JohnTitor
Rollup merge of rust-lang#85363 - EFanZh:gdb-pretty-print-slices, r=M…
5221548 
…ark-Simulacrum

Support pretty printing slices using GDB

Support pretty printing `&[T]`, `&mut [T]` and `&mut str` types using GDB.

Support pretty printing `&mut [T]` and `&mut str` types using LLDB.

Fixes rust-lang#85219.
@inquisitivecrystal
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@rustbot label A-slice C-enhancement T-dev-tools

@rustbot rustbot added A-slice Area: [T] C-enhancement Category: An issue proposing an enhancement or a PR with one. T-dev-tools Relevant to the dev-tools subteam, which will review and decide on the PR/issue. labels Jun 4, 2021
@bors bors closed this as completed in 0deb536 Jul 8, 2021
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A-slice Area: [T] C-enhancement Category: An issue proposing an enhancement or a PR with one. T-dev-tools Relevant to the dev-tools subteam, which will review and decide on the PR/issue.
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Support pretty printing slices using GDB EFanZh/rust
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@EFanZh @inquisitivecrystal @rustbot @DaviRain-Su