Re: [libmicrohttpd] GNU libmicrohttpd 0.9.74 released

[Markus Doppelbauer]

> + Added '--enable-sanitizers[=address,undefined,leak,user-poison]'

>    configure parameter (instead of '--enable-sanitizer'),

>    implemented custom memory poisoning for memory pools.

We get strange asan aborts (maybe once per 30min):

   ERROR: AddressSanitizer: use-after-poison on address 0xdeadbeef

My question (sorry I can't find any docs on this issue):

MHD calls '_MHD_POISON_MEMORY()' before 'free()'.

Other code calls 'ASAN_UNPOISON_MEMORY_REGION()' before free, e.g.:

https://github.com/AlxHnr/CRegion/blob/1347314d953e8b5e26eed3b0fe3151e482958c39/src/mempool.c#L69

Best wishes

Markus