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