compile trinitycore with -DASAN=1 -DCMAKE_BUILD_TYPE=RelWithDebInfo

Ensure that a directory called worldasan exists in the bin directory, where worldserver is:

cd <bin directory> eg: cd ~/wow/bin

mkdir -p worldasan

start core with:

ASAN_OPTIONS=halt_on_error=0:verbosity=1:log_path=worldasan/worldasan:detect_stack_use_after_return=1 LSAN_OPTIONS=verbosity=1:log_threads=1 ./worldserver

Test the result using ".debug asan memoryleak" and ".debug asan outofbounds" commands.

enjoy your valgrind like debug without slowing your server like hell.

More read

YouTube channel Binary Adventures has a series of videos about Address Sanitizer. The first video shows how it works, this is where he starts to explain how a buffer overflow is detected