• Status Closed
  • Percent Complete
  • Task Type Bugs
  • Category Utils
  • Assigned To No-one
  • Operating System All players
  • Severity Low
  • Priority Very Low
  • Reported Version Daily build (which?)
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: Rockbox
Opened by store88 - 2009-02-12
Last edited by fml2 - 2009-12-15

FS#9896 - Can't format a bdf file to fnt

When convert the file attached to fnt format, occurs Segmentation fault
$ ./convbdf.exe -f -o 5-a.fnt 9-a.bdf

    8 [main] convbdf 4048 _cygtls::handle_exceptions: Error while dumping state (probably corrupte

d stack)
Segmentation fault (core dumped)

   9-a.7z (473 KiB)
Closed by  fml2
2009-12-15 12:59
Reason for closing:  Fixed
Additional comments about closing:   Warning: Undefined array key "typography" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 371 Warning: Undefined array key "camelcase" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 407

No more reproducible with convbdf r20831.

eax=00000000 ebx=00000000 ecx=00000028 edx=00000000 esi=7FF9FF34 edi=7FFA0000
ebp=0022CAD8 esp=0022CAD0 program=C:\cygwin\home\Administrator\otf2bdf3-win32\convbdf.exe, pid 3560, thread main
cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
Stack trace:
Frame Function Args
0022CAD8 610DDFF7 (7FF9FF34, 00000000, 0000016C, 0022CB3C)
0022CC68 0040215F (006B017C, 006B0320, 61168A78, 00000000)
0022CC98 004016E2 (6116B778, 6116B760, 0022CCB8, 00000000)
0022CCB8 00401369 (6116B778, 0022CCF4, 004014B6, 004014CA)
0022CCE8 0040158A (00000001, 6116B6D0, 006B0090, 0022CC70)
0022CD98 610060D8 (00000000, 0022CDD0, 61005450, 0022CDD0)
61005450 61004416 (0000009C, A02404C7, E8611021, FFFFFF48)

 2410 [main] convbdf 3560 _cygtls::handle_exceptions: Error while dumping state (probably corrupted stack)

Because the value of SWIDTH and DWIDTH of font 9-a.bdf is not correct values, convbdf occurs Segmentation fault.

The font was corrected so that convbdf should not terminate abnormally.
Please confirm it.

Also, for convbdf, I corrected to output the error when the value of BBX, SWIDTH or DWIDTH was not correct.

I upload again because I failed in uploading. (269.3 KiB)

I corrected convbdf further.

fml2 commented on 2009-12-15 12:52

Today, I could not reproduce the crash with the convbdf from svn (r20831) and the originally posted BDF file. The last changes to convbdf date to april 2009, i.e. after the bug was reported. In those changes, some memory access issues have been addressed and fixed. In particular, font max width and the buffer to hold it is allocated correctly.

Hence I think this bug can be closed now.


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