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Re: [Chicken-janitors] #762: Cairo or SDL cause a crash in this example

From: Chicken Trac
Subject: Re: [Chicken-janitors] #762: Cairo or SDL cause a crash in this example
Date: Fri, 23 Dec 2011 09:29:38 -0000

#762: Cairo or SDL cause a crash in this example
  Reporter:  ckeen       |       Owner:  ckeen                    
      Type:  defect      |      Status:  new                      
  Priority:  major       |   Milestone:  4.8.0                    
 Component:  extensions  |     Version:  4.7.x                    
Resolution:              |    Keywords:  sdl cairo segfault no fun

Comment(by mrk):

 The problem seems to be with the extents handling.
 test-cairo.scm makes heavier usage of extents and crashes qicker.
 If no text-extents are used (define no-extents #f), the crash seems not to
 occur anymore.

 Below a new backtrace built with CHICKEN Version, DEBUGBUILD=1

 $ gdb test-cairo
 GNU gdb (GDB) 7.3-debian
 Copyright (C) 2011 Free Software Foundation, Inc.
 License GPLv3+: GNU GPL version 3 or later
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
 and "show warranty" for details.
 This GDB was configured as "x86_64-linux-gnu".
 For bug reporting instructions, please see:
 Reading symbols from /home/mk/prog/chicken/test-cairo/test-cairo...(no
 debugging symbols found)...done.
 (gdb) core-file core
 [New LWP 27531]
 warning: Can't read pathname for load map: Input/output error.
 w[Thread debugging using libthread_db enabled]
 Core was generated by `./test-cairo'.
 Program terminated with signal 11, Segmentation fault.
 #0  0x00007fbc5f39d19d in f_2129 () from /usr/local/lib/chicken/6/
 (gdb) where
 #0  0x00007fbc5f39d19d in f_2129 () from /usr/local/lib/chicken/6/
 #1  0x00007fbc67399adf in C_values (c=3, closure=140447169421272,
 k=140733929207552) at runtime.c:6008
 #2  0x00007fbc5f3a30e7 in f_2124 () from /usr/local/lib/chicken/6/
 #3  0x0000000000401a09 in f_227 ()
 #4  0x00007fbc5f39d10b in f_2087 () from /usr/local/lib/chicken/6/
 #5  0x00007fbc67399adf in C_values (c=3, closure=140447169421272,
 k=140733929208064) at runtime.c:6008
 #6  0x00007fbc5f3a2f2b in f_2082 () from /usr/local/lib/chicken/6/
 #7  0x0000000000401a63 in f_238 ()
 #8  0x00007fbc6739acf9 in C_minus (c=3, closure=0, k=140733929208776,
 n1=140733929208664) at runtime.c:6271
 #9  0x0000000000403c3b in f_242 ()
 #10 0x00007fbc5f39d87f in f_2223 () from /usr/local/lib/chicken/6/
 #11 0x0000000000401f52 in f_234 ()
 #12 0x00007fbc5f39d793 in f_2213 () from /usr/local/lib/chicken/6/
 #13 0x0000000000402061 in f_224 ()
 #14 0x00007fbc5f39c390 in f_1614 () from /usr/local/lib/chicken/6/
 #15 0x00007fbc67399adf in C_values (c=3, closure=140447169421272,
 k=140733929209496) at runtime.c:6008
 #16 0x00007fbc5f3a19b1 in f_1609 () from /usr/local/lib/chicken/6/
 #17 0x000000000040214a in f_221 ()
 #18 0x00007fbc5f39c0fd in f_1497 () from /usr/local/lib/chicken/6/
 #19 0x00007fbc67399adf in C_values (c=3, closure=140447169421272,
 k=140733929210096) at runtime.c:6008
 #20 0x00007fbc5f3a14ed in f_1492 () from /usr/local/lib/chicken/6/
 #21 0x000000000040224c in f_218 ()
 #22 0x00007fbc5f39cbdf in f_1929 () from /usr/local/lib/chicken/6/
 #23 0x00007fbc67399adf in C_values (c=3, closure=140447169421272,
 k=140733929210624) at runtime.c:6008
 #24 0x00007fbc5f3a2809 in f_1924 () from /usr/local/lib/chicken/6/
 #25 0x000000000040232e in f_215 ()
 #26 0x00007fbc5f39e99c in f_2512 () from /usr/local/lib/chicken/6/
 #27 0x00007fbc66f410f9 in f_19626 (c=2, t0=140733929211712,
 t1=140733929210944) at library.c:15909
 #28 0x00007fbc6739e329 in allocate_vector_2 (dummy=0x0) at runtime.c:7076
 #29 0x00007fbc6739df7d in C_allocate_vector (c=6, closure=140447169422536,
 k=140733929211712, size=13, bvecf=22, init=8202, align8=6)
     at runtime.c:7026
 #30 0x00007fbc66faea18 in f_6738r (t0=140447169423488, t1=140733929211712,
 t2=13, t3=14) at library.c:37322
 #31 0x00007fbc66fae909 in f_6738 (c=3, t0=140447169423488,
 t1=140733929211712, t2=13) at library.c:37303
 #32 0x00007fbc66f40feb in f_19620 (c=2, t0=140733929211824,
 t1=140447169345944) at library.c:15892
 #33 0x00007fbc66f40e02 in f_19616r (t0=140447169427784,
 t1=140447169708928, t2=34387168, t3=14) at library.c:15866
 #34 0x00007fbc66f03e0c in tr3r (k=0x7fbc66f40d35 <f_19616r>) at
 #35 0x00007fbc6734f2df in CHICKEN_run (toplevel=0x0) at runtime.c:1324
 #36 0x00007fbc6734d05c in CHICKEN_main (argc=1, argv=0x7fff2bdbc9f8,
 toplevel=0x401119) at runtime.c:540
 #37 0x00007fbc66698ead in __libc_start_main (main=<optimized out>,
 argc=<optimized out>, ubp_av=<optimized out>, init=<optimized out>,
     fini=<optimized out>, rtld_fini=<optimized out>,
 stack_end=0x7fff2bdbc9e8) at libc-start.c:228
 #38 0x0000000000400fc5 in _start ()

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Chicken Scheme is a compiler for the Scheme programming language.

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