[argyllcms] Re: Dispread segmentation fault

From: Klaus Karcher <lists@xxxxxxxxxxxxxxxxx>
To: argyllcms@xxxxxxxxxxxxx
Date: Mon, 25 Aug 2008 19:26:11 +0200

Graeme Gill wrote:

Ah - I turned debugging on, and optimization off, so it's probably
a compiler optimization bug that's the problem, which is why it

went away. Do you have gdb on your system (Gnu Debugger see<http://en.wikipedia.org/wiki/GDB>) ?

Try running it from the command line to see. I would
have thought it would ship in the default OS X installation.

I've updated <http://www.argyllcms.com/dispread_ppc_debug.tgz>
with both optimization on, and debugging symbols, so see if
that gives a segmentation fault and a backtrace.

Graeme Gill.


here is my gdb session:

Power Mac G5 Quad
MacOS X 10.4.11
eye-one pro Rev A

Klaus:~ klaus$ targen -d3 -f0 test
Klaus:~ klaus$ gdb dispread_debug2

GNU gdb 6.3.50-20050815 (Apple version gdb-573) (Fri Oct 20 15:54:33 GMT2006)

Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are

welcome to change it and/or distribute copies of it under certainconditions.

Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.

This GDB was configured as "powerpc-apple-darwin"...Reading symbols forshared libraries ..... done


(gdb) run -v -yl -D test
Starting program: /Users/klaus/dispread_debug2 -v -yl -D test

Reading symbols for shared libraries................................................................ done

Found 2 screens
Number of patches = 11
Setting up the instrument
Reading symbols for shared libraries . done
i1pro: About to init coms
i1pro: About to init USB
icoms: About to set usb port characteristics
icoms: About to open the USB port
icoms: USB port needs opening
icoms: About to open USB port 'usb:/bus43/dev0 (GretagMacbeth i1 Pro)'
icoms: USB port is now open
icoms: Clearing any USB errors
icoms: usb port characteristics set ok
i1pro: init coms has suceeded
i1pro: About to init instrument

i1pro: Instrument reset with mask 0x1f
Reset complete, ICOM err 0x0

i1pro: GetMisc
GetMisc returns 101, 0x0000, 0xe000, 0x01, 0x08 ICOM err 0x0
Firmware rev = 101

i1pro: Read EEProm address 0x0 size 0x2000
Read 0x2000 bytes, ICOM err 0x0
CPLD rev = 101

i1pro: GetMisc
GetMisc returns 101, 0x0000, 0xe000, 0x01, 0x00 ICOM err 0x0

i1pro: Instrument reset with mask 0x1f
Reset complete, ICOM err 0x0

i1pro: GetMeasureParams
MeasureParam returns 300, 20, 1, 0x04 ICOM err 0x0
Instrument Type:   Eye-One Pro
Serial Number:     102239
Firmware version:  101
CPLD version:      101
Date manufactured: 30-4-2002
U.V. filter ?:     No
Measure Ambient ?: No
Tot. Measurement Count:           42468
Remission Spot Count:             10605
Remission Scan Count:             3225
Date of last Remission spot cal:  Mon Aug 25 11:55:07 2008
Remission Spot Count at last cal: 10602
Total lamp usage:                 42015.246094
 Display size = 440.000000 x 330.000000 mm
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
dispwin_set_color called
dispwin_get_ramdac called
dispwin_get_ramdac called
inst_handle_calibrate called
About to call calibrate at top of loop
Place cap on the instrument, or place in on a dark surface,
or place on the white calibration reference,
 and then hit any key to continue,
 or hit Esc, ^C or Q to abort:
i1pro: Read 1 byte from switch hit port

About to call calibrate at top of loop

i1pro: SetMeasureParam 14706, 23, 2, 0x06
SetMeasureParams got ICOM err 0x0

i1pro: Triggering measurement after 10msec delay
Scheduled triggering OK