add test case for a C compiler warning due to a bad extension type cast on final method calls
add test case for a C compiler warning due to a bad extension type cast on final method calls

fperez/cython,andreasvc/cython,cython/cython,scoder/cython,slonik-az/cython,ChristopherHogan/cython,scoder/cython,da-woods/cython,mrGeen/cython,mrGeen/cython,JelleZijlstra/cython,hickford/cython,scoder/cython,acrispin/cython,mcanthony/cython,achernet/cython,mcanthony/cython,dahebolangkuan/cython,mcanthony/cython,hickford/cython,andreasvc/cython,c-blake/cython,roxyboy/cython,achernet/cython,hhsprings/cython,hickford/cython,roxyboy/cython,marscher/cython,dahebolangkuan/cython,marscher/cython,JelleZijlstra/cython,roxyboy/cython,slonik-az/cython,fabianrost84/cython,c-blake/cython,fabianrost84/cython,cython/cython,mcanthony/cython,achernet/cython,encukou/cython,mrGeen/cython,mrGeen/cython,da-woods/cython,c-blake/cython,encukou/cython,JelleZijlstra/cython,encukou/cython,hhsprings/cython,madjar/cython,ABcDexter/cython,fperez/cython,madjar/cython,dahebolangkuan/cython,dahebolangkuan/cython,dahebolangkuan/cython,cython/cython,andreasvc/cython,slonik-az/cython,fabianrost84/cython,acrispin/cython,roxyboy/cython,cython/cython,madjar/cython,encukou/cython,acrispin/cython,c-blake/cython,slonik-az/cython,slonik-az/cython,roxyboy/cython,ABcDexter/cython,hhsprings/cython,hickford/cython,achernet/cython,madjar/cython,fabianrost84/cython,encukou/cython,da-woods/cython,ABcDexter/cython,ABcDexter/cython,andreasvc/cython,JelleZijlstra/cython,c-blake/cython,scoder/cython,achernet/cython,marscher/cython,andreasvc/cython,marscher/cython,acrispin/cython,madjar/cython,mrGeen/cython,hhsprings/cython,ChristopherHogan/cython,fperez/cython,ABcDexter/cython,fperez/cython,mcanthony/cython,da-woods/cython,hhsprings/cython,marscher/cython,ChristopherHogan/cython,hickford/cython,acrispin/cython,JelleZijlstra/cython,fperez/cython,fabianrost84/cython