Can't trace into an Obj-C call?
Can't trace into an Obj-C call?
- Subject: Can't trace into an Obj-C call?
- From: Rick Mann <email@hidden>
- Date: Tue, 13 Nov 2007 11:10:07 -0800
So, I'm new to Obj-C, but so far my experience is not winning me over.
This problem may be more in Xcode than in the language.
I have this:
1 showChartInspector: (id) inSender
2 {
3 if (mChartInspectorController == NULL)
4 {
5 mChartInspectorController = [[NSWindowController alloc]
initWithWindowNibName: @"ChartInspector"];
6
7 [mChartInspectorController setWindowFrameAutosaveName:
@"ChartInspector"];
8 }
9
10 [self testFoo];
11 }
12
13
14 - (void)
15 testFoo
16 {
17 [mChartInspectorController showOrHideWindow];
18 }
If I put a breakpoint on line 10, and then use the debugger to Step
Into (Control-T in my bindings), first it steps past that, then it
steps into all the message send glue, and then I get lost, and it
never seems to step into the method.
CodeWarrior had a setting for "Don't step into glue code" that was
very convenient.
However, something else is going on. If I put an additional breakpoint
on line 17, and Continue from line 10, then the stack at line 10:
#0 0x00001de5 in -[STXAppDelegate showChartInspector:] at
STXAppDelegate.m:68
#1 0x94091f94 in -[NSApplication sendAction:to:from:]
#2 0x94140868 in -[NSMenu performActionForItemAtIndex:]
#3 0x9414056d in -[NSCarbonMenuImpl
performActionWithHighlightingForItemAtIndex:]
#4 0x941401f2 in -[NSMenu performKeyEquivalent:]
#5 0x9413ea99 in -[NSApplication _handleKeyEquivalent:]
#6 0x9405be4e in -[NSApplication sendEvent:]
#7 0x93fb9705 in -[NSApplication run]
#8 0x93f869ba in NSApplicationMain
#9 0x00001bce in start
Changes to this at line 17:
#0 0x00001dfd in -[STXAppDelegate testFoo] at STXAppDelegate.m:75
#1 0x94091f94 in -[NSApplication sendAction:to:from:]
#2 0x94140868 in -[NSMenu performActionForItemAtIndex:]
#3 0x9414056d in -[NSCarbonMenuImpl
performActionWithHighlightingForItemAtIndex:]
#4 0x941401f2 in -[NSMenu performKeyEquivalent:]
#5 0x9413ea99 in -[NSApplication _handleKeyEquivalent:]
#6 0x9405be4e in -[NSApplication sendEvent:]
#7 0x93fb9705 in -[NSApplication run]
#8 0x93f869ba in NSApplicationMain
#9 0x00001bce in start
Which is not what I would expect. I would expect to see a line for
showChartInspector between #0 and #1 in the second stack. Is this
Xcode being bad, or is this something inherent in the Obj-C call
mechanism? I hope it's the former, because the latter seems less than
useless. If it's the former, how do I fix it?
Thanks!
--
Rick
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