1Regression test for bug related to interaction between instrumentation 2installation and class redefinition. 3 4Redefining a class does not update the instrumentation stack of a thread. 5This is generally fine because the method pointer in the instrumentation 6stack is only used for some sanity-checks, logging and method-exit events 7(where it being the non-obsolete version is advantageous). Unfortunately some 8of the checks fail to account for obsolete methods and can fail sanity 9checks.