[Chicken-janitors] #1146: create-temporary-file and create-temporary-directory are subject to race conditions

[Chicken Trac]

#1146: create-temporary-file and create-temporary-directory are subject to race
conditions
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 Reporter:  mario                                              |       Owner:   
      
     Type:  defect                                             |      Status:  
new    
 Priority:  major                                              |   Milestone:  
someday
Component:  core libraries                                     |     Version:  
4.10.x 
 Keywords:  create-temporary-file, create-temporary-directory  |  
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 Both use the non-atomic strategy of checking if a file system object exist
 then act, which may lead to race conditions.

 {{{create-temporary-directory}}} is specially more fragile because it uses
 {{{directory-exists?}}} to check if a file system object exists.  So, for
 example, if a regular file with the same name as the attempted one exists,
 create-temporary-directory will fail.

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Ticket URL: <http://bugs.call-cc.org/ticket/1146>
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