Vincent Dumont created THRIFT-3377:
--------------------------------------

             Summary: Deep copy is actually shallow when using typedef members
                 Key: THRIFT-3377
                 URL: https://issues.apache.org/jira/browse/THRIFT-3377
             Project: Thrift
          Issue Type: Bug
          Components: Java - Compiler
    Affects Versions: 0.9.2
            Reporter: Vincent Dumont


Consider the following structures:

{code:title=thrift|borderStyle=solid}
typedef set<i32> sset;

struct Test {
  1: set<i32> myset;
}

struct Test2 {
  1: sset myset;
}
{code}

The generate code for Test's copy constructor looks fine, it deep copies the 
set. However, Test2, which should be equivalent, actually does not deep-copy 
the set and instead simply does a shallow assignment like if it was a POD type. 

{code:title=Test.java|borderStyle=solid}
  /** 
   * Performs a deep copy on <i>other</i>.
   */
  public Test(Test other) {
    if (other.isSetMyset()) {
      Set<Integer> __this__myset = new HashSet<Integer>(other.myset);
      this.myset = __this__myset;
    }   
  }
{code}

VS

{code:title=Test2.java|borderStyle=solid}
  /**
   * Performs a deep copy on <i>other</i>.
   */
  public Test2(Test2 other) {
    if (other.isSetMyset()) {
      this.myset = other.myset; // Not deep...
    }
  }
{code}



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