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MEMORY_CHECKING.md

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Memory Checking

For some background see the writeup in #1217.

Running with Memory Checking

Valgrind

  1. Install valgrind, headers, libs (on Fedora sudo dnf install valgrind valgrind-devel valgrind-tools-devel is enough).

  2. Run cargo pgrx init --valgrind. The only major downside to using this as your primary pgrx installation is that its slow, but you can still run without valgrind.

  3. Set USE_VALGRIND in the environment when running tests, for example USE_VALGRIND=1 cargo test. valgrind must be on the path for this to work. This is slow -- taking about 15 minutes on a very beefy cloud server, so manage your timing expectations accordingly.

Sanitizers

TODO

Hardened Allocators

For basic usage of electric fence or scudo, LD_PRELOAD=libefence.so cargo test or LD_PRELOAD=libscudo.so cargo test. More advanced usage (like GWP-ASAN) is still TODO.