[gs-bugs] [Bug 689853] symbol dictionary uses custom DW huffman table (NYI) (segment 0x03)

bugzilla-daemon at ghostscript.com bugzilla-daemon at ghostscript.com
Tue May 25 17:41:02 UTC 2010


http://bugs.ghostscript.com/show_bug.cgi?id=689853

--- Comment #21 from Justin Greer <ghostscript.com at justingreer.com> 2010-05-25 17:40:57 UTC ---
Created an attachment (id=6319)
 --> (http://bugs.ghostscript.com/attachment.cgi?id=6319)
Patch for custom huffman tables, against r11305.

I've had a chance to test your patch, and unfortunately it segfaults trying to
decode a custom huffman table.

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0f977986
0x001b3435 in jbig2_image_compose ()
(gdb) bt
#0  0x001b3435 in jbig2_image_compose ()
#1  0x001b7904 in jbig2_decode_text_region ()
#2  0x001b85ef in jbig2_text_region ()
#3  0x001ae02d in jbig2_data_in ()
#4  0x001ad945 in s_jbig2decode_process ()
#5  0x00091430 in sreadbuf ()
#6  0x000915bd in s_process_read_buf ()
#7  0x000b7bf8 in image_file_continue ()
#8  0x00085adb in gs_interpret ()
#9  0x0007ad36 in gs_main_interpret ()
#10 0x0007b325 in gs_main_run_string_end ()
#11 0x0007b40a in gs_main_run_string ()
#12 0x0007c2d5 in run_string ()
#13 0x0007c415 in runarg ()
#14 0x0007c606 in argproc ()
#15 0x0007e441 in gs_main_init_with_args ()
#16 0x00002347 in main ()

I've updated my patches so they work against revision 11305 (which is the
version your patch is against).  Using that instead, I can still correctly
decode my test files.

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