[GRASS-dev] Re: [GRASS GIS] #746: v.out.ascii with column parameter: segfault

[GRASS GIS]

#746: v.out.ascii with column parameter: segfault
----------------------+-----------------------------------------------------
  Reporter:  neteler  |       Owner:  grass-dev at lists.osgeo.org
      Type:  defect   |      Status:  new                      
  Priority:  normal   |   Milestone:  6.4.0                    
 Component:  Vector   |     Version:  6.4.0 RCs                
Resolution:           |    Keywords:                           
  Platform:  Linux    |         Cpu:  x86-64                   
----------------------+-----------------------------------------------------
Comment (by hamish):

 I get a bit more out of valgrind,

 {{{
 ==28766== Conditional jump or move depends on uninitialised value(s)
 ==28766==    at 0x4C22D89: strlen (mc_replace_strmem.c:242)
 ==28766==    by 0x7356CB0: vfprintf (in /lib/libc-2.7.so)
 ==28766==    by 0x7357B5F: (within /lib/libc-2.7.so)
 ==28766==    by 0x7353435: vfprintf (in /lib/libc-2.7.so)
 ==28766==    by 0x52A8270: G_debug (debug.c:83)
 ==28766==    by 0x591A98F: db_select_value (select.c:230)
 ==28766==    by 0x402473: bin_to_asc (b2a.c:217)
 ==28766==    by 0x40310A: main (out.c:185)
 ==28766==
 ==28766== Conditional jump or move depends on uninitialised value(s)
 ==28766==    at 0x4C22D98: strlen (mc_replace_strmem.c:242)
 ==28766==    by 0x7356CB0: vfprintf (in /lib/libc-2.7.so)
 ==28766==    by 0x7357B5F: (within /lib/libc-2.7.so)
 ==28766==    by 0x7353435: vfprintf (in /lib/libc-2.7.so)
 ==28766==    by 0x52A8270: G_debug (debug.c:83)
 ==28766==    by 0x591A98F: db_select_value (select.c:230)
 ==28766==    by 0x402473: bin_to_asc (b2a.c:217)
 ==28766==    by 0x40310A: main (out.c:185)
 ==28766==
 ==28766== Syscall param write(buf) points to uninitialised byte(s)
 ==28766==    at 0x73D09F0: write (in /lib/libc-2.7.so)
 ==28766==    by 0x737E909: _IO_file_write (in /lib/libc-2.7.so)
 ==28766==    by 0x737E569: (within /lib/libc-2.7.so)
 ==28766==    by 0x737E84D: _IO_file_xsputn (in /lib/libc-2.7.so)
 ==28766==    by 0x7357C09: (within /lib/libc-2.7.so)
 ==28766==    by 0x7353435: vfprintf (in /lib/libc-2.7.so)
 ==28766==    by 0x52A8270: G_debug (debug.c:83)
 ==28766==    by 0x591A98F: db_select_value (select.c:230)
 ==28766==    by 0x402473: bin_to_asc (b2a.c:217)
 ==28766==    by 0x40310A: main (out.c:185)
 ==28766==  Address 0x7feffcc6a is on thread 1's stack
 ==28766==
 ==28766== Conditional jump or move depends on uninitialised value(s)
 ==28766==    at 0x507E6BF: db_enlarge_string (string.c:113)
 ==28766==    by 0x507E657: set_string (string.c:92)
 ==28766==    by 0x507E588: db_set_string (string.c:35)
 ==28766==    by 0x507E8AA: db_copy_string (string.c:214)
 ==28766==    by 0x507F546: db_copy_value (value.c:319)
 ==28766==    by 0x591A9BB: db_select_value (select.c:235)
 ==28766==    by 0x402473: bin_to_asc (b2a.c:217)
 ==28766==    by 0x40310A: main (out.c:185)
 ==28766==
 ==28766== Use of uninitialised value of size 8
 ==28766==    at 0x4C22DFC: strcpy (mc_replace_strmem.c:268)
 ==28766==    by 0x507E678: set_string (string.c:95)
 ==28766==    by 0x507E588: db_set_string (string.c:35)
 ==28766==    by 0x507E8AA: db_copy_string (string.c:214)
 ==28766==    by 0x507F546: db_copy_value (value.c:319)
 ==28766==    by 0x591A9BB: db_select_value (select.c:235)
 ==28766==    by 0x402473: bin_to_asc (b2a.c:217)
 ==28766==    by 0x40310A: main (out.c:185)
 ==28766==
 ==28766== Invalid write of size 1
 ==28766==    at 0x4C22DFC: strcpy (mc_replace_strmem.c:268)
 ==28766==    by 0x507E678: set_string (string.c:95)
 ==28766==    by 0x507E588: db_set_string (string.c:35)
 ==28766==    by 0x507E8AA: db_copy_string (string.c:214)
 ==28766==    by 0x507F546: db_copy_value (value.c:319)
 ==28766==    by 0x591A9BB: db_select_value (select.c:235)
 ==28766==    by 0x402473: bin_to_asc (b2a.c:217)
 ==28766==    by 0x40310A: main (out.c:185)
 ==28766==  Address 0x7ffffffff is not stack'd, malloc'd or (recently)
 free'd
 ==28766==
 ==28766== Process terminating with default action of signal 11 (SIGSEGV)
 ==28766==  Access not within mapped region at address 0x7FFFFFFFF
 ==28766==    at 0x4C22DFC: strcpy (mc_replace_strmem.c:268)
 ==28766==    by 0x507E678: set_string (string.c:95)
 ==28766==    by 0x507E588: db_set_string (string.c:35)
 ==28766==    by 0x507E8AA: db_copy_string (string.c:214)
 ==28766==    by 0x507F546: db_copy_value (value.c:319)
 ==28766==    by 0x591A9BB: db_select_value (select.c:235)
 ==28766==    by 0x402473: bin_to_asc (b2a.c:217)
 ==28766==    by 0x40310A: main (out.c:185)
 664070.15136424|5103723.69345589|1
 ==28766==
 ==28766== ERROR SUMMARY: 8 errors from 6 contexts (suppressed: 20 from 2)
 ==28766== malloc/free: in use at exit: 23,975 bytes in 131 blocks.
 ==28766== malloc/free: 292 allocs, 161 frees, 47,116 bytes allocated.
 ==28766== For counts of detected errors, rerun with: -v
 ==28766== searching for pointers to 131 not-freed blocks.
 ==28766== checked 2,826,664 bytes.
 ==28766==
 ==28766== LEAK SUMMARY:
 ==28766==    definitely lost: 369 bytes in 16 blocks.
 ==28766==      possibly lost: 58 bytes in 1 blocks.
 ==28766==    still reachable: 23,548 bytes in 114 blocks.
 ==28766==         suppressed: 0 bytes in 0 blocks.
 ==28766== Rerun with --leak-check=full to see details of leaked memory.
 Segmentation fault
 }}}


 Hamish

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/746#comment:3>
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