[Chicken-janitors] #1459: segfault violation with thread-sleep! on a flonums

[Chicken Trac]

#1459: segfault violation with thread-sleep! on a flonums
------------------------+--------------------------------
 Reporter:  kristianlm  |                 Owner:
     Type:  defect      |                Status:  new
 Priority:  major       |             Milestone:  someday
Component:  unknown     |               Version:  5.0
 Keywords:              |  Estimated difficulty:
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 When I run thread-sleep! under certain conditions, I get a segfault. I
 think this is a bug.

 {{{
 1944 address@hidden ~/p/e/c/tests  ➤ cat thread-sleep-segfault.scm
 (import srfi-18)

 (thread-start!
  (lambda () (thread-sleep! 2.1)))
 1944 address@hidden ~/p/e/c/tests  ➤ csi5 -s thread-sleep-segfault.scm # works
 1946 address@hidden ~/p/e/c/tests  ➤ csc5 thread-sleep-segfault.scm
 1947 address@hidden ~/p/e/c/tests  ➤ ./thread-sleep-segfault # works
 1944 address@hidden ~/p/e/c/tests  ➤ csi5 thread-sleep-segfault.scm # fails
 CHICKEN
 (c) 2008-2018, The CHICKEN Team
 (c) 2000-2007, Felix L. Winkelmann
 Version 5.0.0 (rev 4e1f1a7c)
 linux-unix-gnu-x86-64 [ 64bit dload ptables ]

 ; loading thread-sleep-segfault.scm ...
 ; loading /home/klm/.chickens/master/lib/chicken5/9/srfi-18.import.so ...
 ; loading
 /home/klm/.chickens/master/lib/chicken5/9/chicken.flonum.import.so ...
 ; loading /home/klm/.chickens/master/lib/chicken5/9/srfi-18.so ...
 #;1>
 Warning (#<thread: thread351>): in thread: segmentation violation

         Call history:

         <eval>    (thread-sleep! 2.1)   <--
 }}}

 I've tried various values for thread-sleep!:

 - fixnums seem to work ok
 - some rational numbers seem to work
 - I don't think any inexact numbers work
 - 0.5 does not work
 - 1/2 works!
 - 1/3 does not work

 If I add '(thread-sleep! 3)' at the end of the file, everything seems to
 work again. Maybe the `repl` is causing this?

--
Ticket URL: <https://bugs.call-cc.org/ticket/1459>
CHICKEN Scheme <https://www.call-cc.org/>
CHICKEN Scheme is a compiler for the Scheme programming language.