CODEWITHSUNDEEP
iosxcodelldb
user1274177
user1274177

Reputation: 321

LLDB equivalent to GDB's "info malloc-history <address>" command?

I am trying to resolve a "message sent to deallocated instance " error in iOS.

Upvotes: 31

Views: 15960

Answers (3)

Avishay Cohen
Avishay Cohen

Reputation: 2428

Use instruments, you'll get the exact line -

(In XCode) Run it through "Product" -> "Profile".

This will start Instruments, there you should choose "Zombies" and reproduce the bug event.

You'l get a pop-up once a zombie is called, press the chevron to see the exact line.

Problem is usually a bad __bridge (optional bridges __brige_retained / __bridge_transfer / __bridge)

Upvotes: 2

karstux
karstux

Reputation: 1492

See the LLDB-GDB command map (http://lldb.llvm.org/lldb-gdb.html) - you have to import a script, and the command is named malloc_info now. Obviously, malloc stack logging still needs to be turned on in the scheme options.

(lldb) script import lldb.macosx.heap
(lldb) malloc_info --stack-history 0x10010d680

Unfortunately, it doesn't show dealloc's - didn't GDBs malloc-history show that as well?

Upvotes: 44

Kevin Draz
Kevin Draz

Reputation: 211

You used to be able to use the malloc_history command-line tool from a shell and give it the process ID and address of interest. It appears this command is no longer installed by the latest Xcode's command line tools. :-(

Upvotes: 0

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