[Chicken-janitors] #27: unsigned-c-string does not work as advertised

[Chicken Trac]

#27: unsigned-c-string does not work as advertised
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Reporter:  sjamaan  |       Owner:  felix                 
    Type:  defect   |      Status:  new                   
Priority:  minor    |   Component:  build system          
 Version:           |    Keywords:  ffi, unsigned, strings
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 When trying to call a foreign C function that accepts "unsigned char *"
 arguments, I get compiler warnings "pointer targets in passing argument N
 of 'X' differ in signedness".

 This is caused because unsigned-c-string(*) results in the same generated
 code as c-string(*). This happens on Chicken 4 and also on the current
 version of Chicken 3.

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Ticket URL: <http://www.irp.oist.jp/trac/chicken/ticket/27>
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