Bug 1780938 Comment 27 Edit History

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Original comment by
on 
For the record (and for my own future reference), here's what I did with `lldb`:

1. `b -[TTSSpeechServerInstance _unzipFile:withPassword:]`

2. `br command add -o "br set -b objc_autoreleaseReturnValue -t current -o true -C 'call (long) CFDataGetLength($x0)' -G true"`

3.  `br modify -G true`

These contortions display the length of the `CFData` object returned by `-[TTSSpeechServerInstance _unzipFile:withPassword:]`. From comment #24 above, my hunch was that this bug's crashes were triggered by this object getting truncated (so that in no longer had a terminal NULL). If my hunch was right, I should have seen the length change just before a crash. I did this on an Apple Silicon Mac running macOS 13 Beta 5 (build 22A5321d).
Revision 1 by
on 
For the record (and for my own future reference), here's what I did with `lldb`:

1. `b -[TTSSpeechServerInstance _unzipFile:withPassword:]`

2. `br command add -o "br set -b objc_autoreleaseReturnValue -t current -o true -C 'call (long) CFDataGetLength($x0)' -G true"`

3.  `br modify -G true`

These contortions display the length of the `CFData` object returned by `-[TTSSpeechServerInstance _unzipFile:withPassword:]` without stopping at each breakpoint. From comment #24 above, my hunch was that this bug's crashes were triggered by this object getting truncated (so that in no longer had a terminal NULL). If my hunch was right, I should have seen the length change just before a crash. I did this on an Apple Silicon Mac running macOS 13 Beta 5 (build 22A5321d).
Revision 2 by
on 
For the record (and for my own future reference), here's what I did with `lldb`:

1. `b -[TTSSpeechServerInstance _unzipFile:withPassword:]`

2. `br command add -o "br set -b objc_autoreleaseReturnValue -t current -o true -C 'call (long) CFDataGetLength($x0)' -G true"`

3.  `br modify -G true`

These contortions display the length of the `CFData` object returned by `-[TTSSpeechServerInstance _unzipFile:withPassword:]` without stopping at each breakpoint. From comment #24 above, my hunch was that this bug's crashes were triggered by this object getting truncated (so that it no longer had a terminal NULL). If my hunch was right, I should have seen the length change just before a crash. I did this on an Apple Silicon Mac running macOS 13 Beta 5 (build 22A5321d).

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