rr: lightweight recording & deterministic debugging
what rr does rr aspires to be your primary C/C++ debugging tool for Linux, replacing — well, enhancing — gdb. You record a failure once, then debug the recording, deterministically, as many times as you want. The same execution is replayed every time. rr also provides efficient reverse execution under gdb. Set breakpoints and data watchpoints and quickly reverse-execute to where they were hit. rr
using rr with rust
rr-with-rust.md using rust with rr rr is a great debugging tool. it records a trace of a program's execution, as well as the results of any syscalls it executes, so that you can "rewind" while you debug, and get deterministic forward and reverse instrumented playback. it works with rust, but by default if you try it out, it could be pretty ugly when you inspect variables. if this bothers you, conf
🚰 Hunting leaks with GDB
Posted on June 16, 2019 There's currently a nasty memory leak in haskell-ide-engine which leaks all the cached module information about from GHC. It seems to only occur on certain platforms, but on platforms unfortunate to be affected by it, a sizeable portion memory is leaked every time the user types or edits their document. For a small module of about 60 lines, this was 30-ishMB per edit. (Yike
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