iOS lldb debugging common commands

Lldb is the debugger under LLVM. Xcode starts with the 4.0 compiler instead of LLVM, and the corresponding debugger changes from GDB to Lldb.

1. P For output base type

2. po for Output objective-c object

3. expr can execute the specified expression dynamically in the debug and print the result. Commonly used to modify the value of a variable during debugging

4. Call invocationcall [self.view setBackgroundColor:[UIColor redColor]]

5. bt print Call stack, plus all to print all thread stacks

6. The Image command can be used for addressing with multiple combinations of commands. A more practical use is to find the code location corresponding to the stack address.

  image lookup --address 0x0000000100004af8

iOS lldb debugging common commands