DO NOT REPLY [Bug 39911] New: - BCEL 5.2 - MethodGen does not initialize max_stack and max_locals properly

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http://issues.apache.org/bugzilla/show_bug.cgi?id=39911

           Summary: BCEL 5.2 - MethodGen does not initialize max_stack and
                    max_locals properly
           Product: BCEL
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P2
         Component: Main
        AssignedTo: [email protected]
        ReportedBy: [email protected]


The constructor for MethodGen:

public MethodGen(Method, String, ConstantPoolGen)

does not properly initialize the max_stack and max_local variables from the
Method object. Thus the following sequence of actions will produce a
non-verifying class, even though it clearly shouldn't:

ClassGen cg = new ClassGen(javaClass);
Method m = cg.getMethodAt(0);
MethodGen mg = new MethodGen(m, cg.getClassName(), cg.getConstantPool());
cg.setMethodAt(mg.getMethod(), 0);
cg.getJavaClass().dump(...);

Bug can be fixed by adding the following the constructor:

Code c = m.getCode();
max_stack = c.getMaxStack();
max_locals = c.getMaxLocals();

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