package test3; class NewExprTryCatch2 { } public class NewExprTryCatch { public void instrumentMe() { // we need a 'new' expression to instrument, the exact type is not important new Object(); // if the try/catch block below is removed, the error does not occur try { System.out.println(); } catch (Throwable t) { } } public void me2() throws Exception { // the error is somehow related to the string concatenation and local variables, // when the code below is replaced with something else, the error does not occur. String s1 = "a"; String s2 = s1 + "b"; } public int test() throws Exception { instrumentMe(); me2(); return 0; } }