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[Chicken-janitors] #493: set! returns its value when compiled

From: Chicken Trac
Subject: [Chicken-janitors] #493: set! returns its value when compiled
Date: Sun, 06 Feb 2011 05:59:57 -0000

#493: set! returns its value when compiled
 Reporter:  zbigniew  |       Owner:       
     Type:  defect    |      Status:  new  
 Priority:  minor     |   Milestone:  4.7.0
Component:  compiler  |     Version:  4.6.x
 Keywords:            |  
 I guess this has been true for a while (it is in 4.5.5 and 4.6.4).  It
 causes some light breakage, like if you use (display ...) on a TCP port,
 display will sometimes return the empty string instead of void, since
 there is a (set!) as the final statement in the output port lambda.  So, I
 assume this is unintentional.

 echo "(print (set! a 3))" > set.scm

 csc set.scm

 csi -script set.scm

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Chicken Scheme is a compiler for the Scheme programming language.

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