[Lazarus] Printing on Raspberry Pi

[Koenraad Lelong]

I did some further testing.

I modified the code somewhat :
       tmp1:=PPgw;
       tmp2:=kx;
       tmp1:=tmp1 * tmp2;
       Pgw:=round(tmp1);
//      Pgw := round(PPgw * kx);

tmp1 and tmp2 are Double. Running in gdb and backtracing at the crash 
gives this :


Program received signal SIGBUS, Bus error.
0x004b45fc in TFRPRINTER__FILLPRNINFO (P=..., this=<error reading 
variable>) at lr_prntr.pas:1044
1044	      tmp1:=PPgw;
(gdb) bt
#0  0x004b45fc in TFRPRINTER__FILLPRNINFO (P=..., this=<error reading 
variable>) at lr_prntr.pas:1044
#1  0x003bc198 in TFRREPORT__DOPRINTREPORT (PAGENUMBERS=0x744cff8c 
'1-1', COPIES=1, this=<error reading variable>)
     at lr_class.pas:11429
#2  0x003bbe20 in TFRREPORT__PRINTBEFOREMODAL (SENDER=0x75f0a450, 
this=<error reading variable>) at lr_class.pas:11237
#3  0x004c4548 in TFRPROGRESSFORM__DOBEFOREMODAL (DATA=0, this=<error 
reading variable>) at lr_progr.pas:88
#4  0x0006b71c in TAPPLICATION__PROCESSASYNCCALLQUEUE (this=<error 
reading variable>)
     at ./include/application.inc:1067
#5  0x000699c0 in TAPPLICATION__IDLE (WAIT=true, this=<error reading 
variable>) at ./include/application.inc:389
#6  0x00063930 in TCUSTOMFORM__SHOWMODAL (this=<error reading variable>) 
at ./include/customform.inc:2916
#7  0x004c4484 in TFRPROGRESSFORM__SHOW_MODAL (DOC=0x754ab400, 
this=<error reading variable>) at lr_progr.pas:70
#8  0x003bbfbc in TFRREPORT__PRINTPREPAREDREPORT (PAGENUMBERS=0x744cff8c 
'1-1', COPIES=1,
     this=<error reading variable>) at lr_class.pas:11265
#9  0x000739d8 in BTNPRINTSETUPCLICK (this=0x756429b0, 
SENDER=0x75f04870) at modmain.pas:229
#10 0x00224e5c in TCONTROL__CLICK (this=<error reading variable>) at 
./include/control.inc:2734
#11 0x00251028 in TBUTTONCONTROL__CLICK (this=<error reading variable>) 
at ./include/buttoncontrol.inc:54
#12 0x00251928 in TCUSTOMBUTTON__CLICK (this=<error reading variable>) 
at ./include/buttons.inc:169
#13 0x00250ef4 in TBUTTONCONTROL__WMDEFAULTCLICKED (MESSAGE=..., 
this=<error reading variable>)
     at ./include/buttoncontrol.inc:20
#14 0x00041360 in SYSTEM$_$TOBJECT_$__$$_DISPATCH$formal ()
#15 0x00223bc8 in TCONTROL__WNDPROC (THEMESSAGE=..., this=<error reading 
variable>) at ./include/control.inc:2122
#16 0x00215b1c in TWINCONTROL__WNDPROC (MESSAGE=..., this=<error reading 
variable>) at ./include/wincontrol.inc:5383
#17 0x002f7a14 in DELIVERMESSAGE (TARGET=0x75f04870,
     AMESSAGE=<error reading variable: Attempt to dereference a generic 
pointer.>) at lclmessageglue.pas:112
#18 0x00309f78 in GTK2WSBUTTON_CLICKED (AWIDGET=0x985708, 
AINFO=0x75c5c7e0) at gtk2wsstdctrls.pp:2428
#19 0x76972afc in ?? () from 
/usr/lib/arm-linux-gnueabihf/libgobject-2.0.so.0
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)