why is it that add nanobind to my CMake project results in a warning about ASAN not coming first in the library list?

[starball5]

I have a CMake project where adding nanobind results in build failing with the message

ASan runtime does not come first in initial library list; you should either link runtime to your application or manually preload it with LD_PRELOAD

Toolchain:

• GCC 13.2.0
• ninja 1.11.0
• CMake 3.29.5
• nanobind 2.0.0
• sanitizers: address + undefined

[wjakob]

That's not a nanobind issue but a more general one involving Python. Either you compile your own Python with ASAN, or you need to use LD_PRELOAD as the message says. If you load an ASAN-based shared library into a non-ASAN process, it's already too late.

[wjakob]

This may be useful by the way: it explains how to use sanitizers in one of the projects I'm developing: https://drjit.readthedocs.io/en/latest/debug.html#sanitizing-python-sessions