tcmalloc has a built-in leak detection mechanism. It took me a couple of tries to figure out how to work it, even after reading the documentation. At least on Centos 7, the trick is to make sure you install the pprof package as well as gperftools-libs package. You will also need to set the PPROF_PATH environment variable so that the tcmalloc runtime can find proof. If you don’t do this, then the leaks report will not resolve symbols, so the stack traces will not be that useful.