#4000: Implement QQ['x'] via Flint ZZ['x'] + denominator
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    Reporter:  malb                                                             
                  |         Owner:  somebody                                    
                                           
        Type:  enhancement                                                      
                  |        Status:  closed                                      
                                           
    Priority:  blocker                                                          
                  |     Milestone:  sage-4.6                                    
                                           
   Component:  basic arithmetic                                                 
                  |    Resolution:  fixed                                       
                                           
    Keywords:                                                                   
                  |   Work_issues:                                              
                                           
    Upstream:  N/A                                                              
                  |      Reviewer:  John Cremona, Martin Albrecht, Alex Ghitza, 
Harald Schilly, William Stein, Mitesh Patel
      Author:  Sebastian Pancratz, Martin Albrecht, William Stein, Jeroen 
Demeyer, Robert Beezer  |        Merged:  sage-4.6.alpha3                       
                                                 
Dependencies:                                                                   
                  |  
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Comment(by leif):

 For the record:

 There's a bug in `fmpq_poly_xgcd()` that can lead to severe heap
 corruption, which in turn can cause almost any kind of failure.

 See #11771 for details.

 (Unfortunately FLINT 2.2, which includes its own / a newer version of
 `fmpq_poly`, doesn't yet provide `xgcd()` for rational polynomials.)

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4000#comment:134>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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