Re: Printing not working at all...

[Riccardo Mottola]

Hi,

Fred Kiefer wrote:
> the first thing I notice from your stack trace is that the line numbers are 
> missing. That way I cannot tell which exception gets thrown. Most likely the 
> PPD file is missing or corrupt. If the file is actually missing, you should try 
> to select a different default printer. If there aren't any PPD files at all, as 
> you wrote, you need to find out why that is the case.

Since I have no real printer set up, I guess we are using the dummy 
generic printer, which is the GS default installed in the standard place 
(I checked against other systems)

I have now a stacktrace with line-numbers:
Program received signal SIGSEGV, Segmentation fault.
[Switching to LWP 1]
0x00007096dc433d7b in NSCountFrames () from 
/System/Library/Libraries/libgnustep-base.so.1.24.9
(gdb) bt
#0  0x00007096dc433d7b in NSCountFrames () from 
/System/Library/Libraries/libgnustep-base.so.1.24.9
#1  0x00007096dc43ff7d in GSPrivateStackAddresses () from 
/System/Library/Libraries/libgnustep-base.so.1.24.9
#2  0x00007096dc45a46d in -[GSStackTrace init] () from 
/System/Library/Libraries/libgnustep-base.so.1.24.9
#3  0x00007096dc4b19a9 in +[NSObject new] () from 
/System/Library/Libraries/libgnustep-base.so.1.24.9
#4  0x00007096dc45b2bb in -[NSException raise] () from 
/System/Library/Libraries/libgnustep-base.so.1.24.9
#5  0x00007096dc45a9af in +[NSException raise:format:arguments:] () from 
/System/Library/Libraries/libgnustep-base.so.1.24.9
#6  0x00007096dc45a8ed in +[NSException raise:format:] () from 
/System/Library/Libraries/libgnustep-base.so.1.24.9
#7  0x00007096dcf26287 in -[NSPrinter(PPDParsingPrivate) 
loadPPDAtPath:symbolValues:inclusionSet:] (self=0x7096d8b295d0,
    _cmd=0x7096dd3d7620 <_OBJC_SELECTOR_TABLE+960>, 
ppdPath=0x7096dcbd6b90, ppdSymbolValues=0x7096d8b2d770, 
inclusionSet=0x7096d8b2d7d0)
    at NSPrinter.m:917
#8  0x00007096dcf25e1b in -[NSPrinter(PPDParsing) parsePPDAtPath:] 
(self=0x7096d8b295d0, _cmd=0x7096c9a07350 <_OBJC_SELECTOR_TABLE+144>,
    ppdPath=0x7096dcbd6b90) at NSPrinter.m:790
#9  0x00007096c9804453 in +[GSLPRPrinter printerWithName:] 
(self=0x7096c9a07240 <_OBJC_Class_GSLPRPrinter>,
    _cmd=0x7096dd3d7380 <_OBJC_SELECTOR_TABLE+288>, 
name=0x7096dc150470) at GSLPRPrinter.m:100
#10 0x00007096dcf23ea1 in +[NSPrinter printerWithName:] 
(self=0x7096dd3d71e0 <_OBJC_Class_NSPrinter>,
    _cmd=0x7096c9a05e30 <_OBJC_SELECTOR_TABLE+112>, 
name=0x7096dc150470) at NSPrinter.m:191
#11 0x00007096c9803459 in +[GSLPRPrintInfo defaultPrinter] 
(self=0x7096c9a05d40 <_OBJC_Class_GSLPRPrintInfo>,
    _cmd=0x7096dd3d8ad0 <_OBJC_SELECTOR_TABLE+176>) at GSLPRPrintInfo.m:83
#12 0x00007096dcf286be in +[NSPrintInfo defaultPrinter] 
(self=0x7096dd3d89a0 <_OBJC_Class_NSPrintInfo>,
    _cmd=0x7096dd3d8ad0 <_OBJC_SELECTOR_TABLE+176>) at NSPrintInfo.m:121
#13 0x00007096dcf28920 in -[NSPrintInfo initWithDictionary:] 
(self=0x7096da7cb230, _cmd=0x7096dd3d8ac0 <_OBJC_SELECTOR_TABLE+160>, 
aDict=0x0)
    at NSPrintInfo.m:161
#14 0x00007096dcf28571 in +[NSPrintInfo sharedPrintInfo] 
(self=0x7096dd3d89a0 <_OBJC_Class_NSPrintInfo>,
    _cmd=0x7096dd376b70 <_OBJC_SELECTOR_TABLE+2576>) at NSPrintInfo.m:96
#15 0x00007096dce908ea in -[NSDocument printInfo] (self=0x7096d8728ec0, 
_cmd=0x608a30 <_OBJC_SELECTOR_TABLE+1776>) at NSDocument.m:1333
#16 0x0000000000402a79 in -[Document printShowingPrintPanel:] ()
#17 0x00007096dce90e71 in -[NSDocument 
printDocumentWithSettings:showPrintPanel:delegate:didPrintSelector:contextInfo:] 
(self=0x7096d8728ec0,
    _cmd=0x7096dd376c60 <_OBJC_SELECTOR_TABLE+2816>, 
settings=0x7096d8b2c1b0, flag=1 '\001', delegate=0x0, sel=0x0, context=0x0)
    at NSDocument.m:1441
#18 0x00007096dce90d98 in -[NSDocument printDocument:] 
(self=0x7096d8728ec0, _cmd=0x7096dd4373b0 <_OBJC_SELECTOR_TABLE+1680>, 
sender=0x7096db1ac2f0)
    at NSDocument.m:1426
#19 0x00007096dce0f70e in -[NSApplication sendAction:to:from:] 
(self=0x7096dcb6f500, _cmd=0x7096dd3b3860 <_OBJC_SELECTOR_TABLE+2720>,
    aSelector=0x7096dd4373b0 <_OBJC_SELECTOR_TABLE+1680>, aTarget=0x0, 
sender=0x7096db1ac2f0) at NSApplication.m:2249
#20 0x00007096dcef3320 in -[NSMenu performActionForItemAtIndex:] 
(self=0x7096db965280, _cmd=0x7096dd3b8220 <_OBJC_SELECTOR_TABLE+3712>, 
index=5)
    at NSMenu.m:1330
#21 0x00007096dcefe0d3 in -[NSMenuView 
_trackWithEvent:startingMenuView:] (self=0x7096dbdbf790, 
_cmd=0x7096dd3b8310 <_OBJC_SELECTOR_TABLE+3952>,
    event=0x7096dd56fd40, mainWindowMenuView=0x0) at NSMenuView.m:1916
#22 0x00007096dcefe315 in -[NSMenuView trackWithEvent:] 
(self=0x7096dbdbf790, _cmd=0x7096dd3b8400 <_OBJC_SELECTOR_TABLE+4192>, 
event=0x7096db965d30)
    at NSMenuView.m:1952
#23 0x00007096dcefe55d in -[NSMenuView mouseDown:] (self=0x7096dbdbf790, 
_cmd=0x7096dd44f380 <_OBJC_SELECTOR_TABLE+7040>, theEvent=0x7096db965d30)
    at NSMenuView.m:1994
#24 0x00007096dcfef538 in -[NSWindow sendEvent:] (self=0x7096dd52b410, 
_cmd=0x7096dd32de80 <_OBJC_SELECTOR_TABLE+4864>, theEvent=0x7096db965d30)
    at NSWindow.m:3924
#25 0x00007096dce0f214 in -[NSApplication sendEvent:] 
(self=0x7096dcb6f500, _cmd=0x7096dd32dcf0 <_OBJC_SELECTOR_TABLE+4464>,
    theEvent=0x7096db965d30) at NSApplication.m:2124
#26 0x00007096dce0d97d in -[NSApplication run] (self=0x7096dcb6f500, 
_cmd=0x7096dd31c8d0 <_OBJC_SELECTOR_TABLE+1808>) at NSApplication.m:1562
#27 0x00007096dcdeb621 in NSApplicationMain (argc=1, 
argv=0x7f7fffa268e8) at Functions.m:91

It is not nice to crash when printing out an exception!

We have a nice hint from the code though:
912       ppdString = [NSString stringWithContentsOfFile: ppdPath];
913       if (nil == ppdString)
914         {
915           // The file isn't readable
916           [NSException raise: NSPPDParseException
917                       format: @"PPD file '%@' isn't readable", ppdPath];
918         }

(gdb) po ppdPath
/Local/Library/PostScript/PPD/English.lproj/Generic-PostScript_Printer-Postscript.ppd

why... Local ? gnustep-base is installed in /System!
in fact:

disc$ head -3 
/Local/Library/PostScript/PPD/English.lproj/Generic-PostScript_Printer-Postscript.ppd
head: 
/Local/Library/PostScript/PPD/English.lproj/Generic-PostScript_Printer-Postscript.ppd: 
No such file or directory

disc$ head -3 
/System/Library/PostScript/PPD/English.lproj/Generic-PostScript_Printer-Postscript.ppd
*PPD-Adobe: "4.3"
*%
*% For information on using this, and to obtain the required backend

So the issue appears that the wrong domain is looked for ?
Furthermore the exception makes a SIGSEV which isn't nice either.

Richard, do you have a clue why we crash inside NSCountFrames() when 
allocating the exception??

Riccardo