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diff --git a/docs/dev/debugging.md b/docs/dev/debugging.md index 8c48fd5a1fe..cc7a790ff46 100644 --- a/docs/dev/debugging.md +++ b/docs/dev/debugging.md @@ -57,6 +57,14 @@ To apply changes to an already running debug process, press <kbd>Ctrl+Shift+P</k - Go back to the `[Extension Development Host]` instance and hover over a Rust variable and your breakpoint should hit. +If you need to debug the server from the very beginning, including its initialization code, you can use the `--wait-dbg` command line argument or `RA_WAIT_DBG` environment variable. The server will spin at the beginning of the `try_main` function (see `crates\rust-analyzer\src\bin\main.rs`) +```rust + let mut d = 4; + while d == 4 { // set a breakpoint here and change the value + d = 4; + } +``` + ## Demo - [Debugging TypeScript VScode extension](https://www.youtube.com/watch?v=T-hvpK6s4wM). |