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[XForms] problem setting value of slider

From: jos
Subject: [XForms] problem setting value of slider
Date: Wed, 21 May 2014 23:00:33 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0


I'm working on a program which has a few sliders.
While setting min and max values of one of them, it crashes.
In gdb this is (part of) the backtrace I see:

Program received signal SIGSEGV, Segmentation fault.
fl_set_input (obj=0x0, str=0x8174518 "0") at input.c:1856
1856        FLI_INPUT_SPEC *sp = obj->spec;
(gdb) bt
#0  fl_set_input (obj=0x0, str=0x8174518 "0") at input.c:1856
#1 0xb7eb58ea in fl_set_input_f (obj=0x0, fmt=<optimized out>) at input.c:1928 #2 0xb7ed3647 in fl_set_spinner_value (obj=0x81670f8, val=219.98316955566406) at spinner.c:452

If I understand this correctly there is a spinner object 0x81670f8 (line #2)
which is going to be set with a value 219.9831...
The call to fl_set_input however shows obj=0x0 (line #1)
which looks to me like it has no object / the object is Null.
Am I interpreting this correctly and if so, is this
happening inside the library (in input.c) or might this be
caused by some error in my code?

Best regards,


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