Hi,

In my project I am encountering a segfault when trying to allocate with `Genode::Heap` (GDB output is from base-linux):

```
Thread 19 "ld.lib.so" received signal SIGSEGV, Segmentation fault.
[Switching to LWP 13744]
0x0000000050019fc8 in Genode::Allocator_avl_base::Block::find_best_fit (this=0x7ffff43efd78, size=8128, align=3, range=...)
    at /phantomuserland/genode/repos/base/src/lib/base/allocator_avl.cc:28
28      {
```

According to the backtrace (see backtrace.log, if interested), I suspect the `find_best_fit` method is being called in an infinite loop. I was not able to recreate this SEGFAULT in a fresh Genode project, so the issue must be from my project's code.

What's interesting is that the SEGFAULT occurs during a `push %rbx` instruction, so perhaps this is due to stack corruption?

I tried adding `-fsanitize=address` to my compile flags, however during `goa build` I get errors stating that the linker cannot find any references to asan symbols (see build.log). I checked, and I have libasan8 installed.

Is address sanitization supported in Genode projects? If so, how can I compile my project with it?

Best,
Rumen