Cocoa mail archive
Re: how to crash on normally ignored exceptions
FROM : matt neuburg
DATE : Fri Nov 22 14:29:39 2002
On Thu, 21 Nov 2002 15:02:16 +0100, David Remahl <<email_removed>> said:
>
>I have found those rather flaky as well in the new dev tools...
>
>A work around, which is made quite difficult because classes apparently
>are not registered as symbols in the debugger, is the following:
>
>(gdb) p (void*)NSClassFromString(@"NSException")
>$1 = (void*)0xa07ed448
>(gdb) p (void*)[$1 instanceMethodForSelector:@selector(raise)]
>$2 = (void*)0x90844888
>(gdb) b *$2
>Breakpoint 1 at 0x90844888
>
>Could someone from Apple comment on the poor handling of symbolic
>debugging, especially related to Objective-C, in the current gdb/dev
>tools suite? The question may be better suited for the pbdev mailing
>list - I am sorry...
I'd like to hear some discussion of it here, though. As I've said before, gdb (or the PB interface to it) is now pretty much busted OMM; po doesn't do anything most of the time. I mostly "debug" by using lots of NSLogs. m.
matt neuburg, phd = <email_removed>, http://www.tidbits.com/matt
pantes anthropoi tou eidenai oregontai phusei
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DATE : Fri Nov 22 14:29:39 2002
On Thu, 21 Nov 2002 15:02:16 +0100, David Remahl <<email_removed>> said:
>
>I have found those rather flaky as well in the new dev tools...
>
>A work around, which is made quite difficult because classes apparently
>are not registered as symbols in the debugger, is the following:
>
>(gdb) p (void*)NSClassFromString(@"NSException")
>$1 = (void*)0xa07ed448
>(gdb) p (void*)[$1 instanceMethodForSelector:@selector(raise)]
>$2 = (void*)0x90844888
>(gdb) b *$2
>Breakpoint 1 at 0x90844888
>
>Could someone from Apple comment on the poor handling of symbolic
>debugging, especially related to Objective-C, in the current gdb/dev
>tools suite? The question may be better suited for the pbdev mailing
>list - I am sorry...
I'd like to hear some discussion of it here, though. As I've said before, gdb (or the PB interface to it) is now pretty much busted OMM; po doesn't do anything most of the time. I mostly "debug" by using lots of NSLogs. m.
matt neuburg, phd = <email_removed>, http://www.tidbits.com/matt
pantes anthropoi tou eidenai oregontai phusei
Subscribe to TidBITS! It's free and smart. http://www.tidbits.com/
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