[jboss-jira] [JBoss JIRA] (JASSIST-260) Stack frame corruption after writing to attribute on injected after method

[ https://issues.jboss.org/browse/JASSIST-260?page=com.atlassian.jira.plugi... ] Rafael Campos updated JASSIST-260: ---------------------------------- Steps to Reproduce: Stack frame corruption after writing to attribute contain on class that contains method with injected code via {code:java} CtMethod.insertAfter(String src) {code} This writing happens inside of the injected code src it self. Example: {code:java} public class Animal { public String ret; public AnimalRoles(){ ret = "Before"; } public String hello() { return ret; } public String die(String age) { return ""; } } {code} {code:java} // Some how get the method hello from Animal into a var name methodHello methodHello.insertAfter("this.ret = \"After\";"); {code} {code:java} // Call the method hello in a fresh Animal instance Animal a = new Animal(); System.out.println(a.hello()); System.out.println(a.ret); {code} Result: Before After Expected: After After Debugging the program a in the method hello it is possible to observe the following message: "com.sun.jdi.InternalException: Got error code in repIy:35 occurred retrieving ‘this' from stack frame." !Image1.png|thumbnail! Tried several work arounds but basically the problem is that the newly written data can not be read at the return statement. No workaround found so far. Also tested with previous versions of javaassist from 3.12.1.GA until 3.20.0GA and all yield the same result. Tried search the web for similar issues but with very little luck. Just some cryptic message with some weird workarounds that I could not get to work by any means. UPDATE: A workaround is possible using method.setBody. was: Stack frame corruption after writing to attribute contain on class that contains method with injected code via {code:java} CtMethod.insertAfter(String src) {code} This writing happens inside of the injected code src it self. Example: {code:java} public class Animal { public String ret; public AnimalRoles(){ ret = "Before"; } public String hello() { return ret; } public String die(String age) { return ""; } } {code} {code:java} // Some how get the method hello from Animal into a var name methodHello methodHello.insertAfter("this.ret = \"After\";"); {code} {code:java} // Call the method hello in a fresh Animal instance Animal a = new Animal(); System.out.println(a.hello()); System.out.println(a.ret); {code} Result: Before After Expected: After After Debugging the program a in the method hello it is possible to observe the following message: "com.sun.jdi.InternalException: Got error code in repIy:35 occurred retrieving ‘this' from stack frame." !Image1.png|thumbnail! Tried several work arounds but basically the problem is that the newly written data can not be read at the return statement. No workaround found so far. Also tested with previous versions of javaassist from 3.12.1.GA until 3.20.0GA and all yield the same result. Tried search the web for similar issues but with very little luck. Just some cryptic message with some weird workarounds that I could not get to work by any means. -- This message was sent by Atlassian JIRA (v6.4.11#64026)