in the build configuration). ## JULIA GC WAIT FOR DEBUGGER If set to anything besides 0, then the Julia garbage collector will wait for a debugger to attach instead of aborting whenever there's a to start is to watch subtyping in action. Build Julia with make debug and fire up Julia within a debugger. gdb debugging tips has some tips which may be useful. Because the subtyping code is used heavily you are debugging some code that uses the profiler or multiple threads, you may want to let the debugger ignore these signals since they can be triggered very often during normal operations. The command

which you can build and use independently of one another: • debug builds, which allow you to use a debugger (lldb) (selected by default if no profile is passed) • release builds, which are slower to build servoshell with a debugger To run servoshell with a debugger, use --debugger-cmd. Note that if you choose gdb or lldb, we automatically use rust-gdb and rust-lldb. $ ./mach run --debugger-cmd=gdb test.html # Same as --debugger-cmd=rust-gdb. $ ./mach run --debugger-cmd=lldb test.html # Same as --debugger-cmd=rust-lldb. To pass extra options to the debugger, you'll need to run the debugger yourself: $

jpg) profiler  debugger  compiler  compiler ## ChatDBG ChatDBG is an experimental debugger for C/C++/Python/Rust code that integrates large language models into a standard debugger (pdb, lldb, and gdb) to help debug your code. With ChatDBG, you can ask your debugger why your program failed, and it will provide a diagnosis

mode a user of the application can execute arbitrary Python code on your computer. If you have the debugger disabled or trust the users on your network, you can make the server publicly available simply by support the server will reload itself on code changes, and it will also provide you with a helpful debugger if things go wrong. To enable all development features (including debug mode) you can export the Windows you need to use set instead of export.) This does the following things: 1. it activates the debugger 2. it activates the automatic reloader 3. it enables the debug mode on the Flask application.

mode a user of the application can execute arbitrary Python code on your computer. If you have the debugger disabled or trust the users on your network, you can make the server publicly available simply by support the server will reload itself on code changes, and it will also provide you with a helpful debugger if things go wrong. To enable all development features (including debug mode) you can export the Windows you need to use set instead of export.) This does the following things: 1. it activates the debugger 2. it activates the automatic reloader 3. it enables the debug mode on the Flask application.

problems ..... 246 12.1.2 Collecting debugging information ..... 247 12.1.3 The built-in VM debugger ..... 247 12.1.4 VM core format ..... 249 12.2 General ..... 250 ## Contents 12.2.1 Guest shows tinker with the exact details of virtual machine execution. Like the VM debugger described in chapter 12.1.3, The built-in VM debugger, page 247, these commands are only useful if you are very familiar with see chapter 12.1.4, VM core format, page 249. This corresponds to the writecore command in the debugger. ## --filename=filename The name of the output file. ## debugvm info VBoxManage debugvm

problems ..... 247 12.1.2 Collecting debugging information ..... 248 12.1.3 The built-in VM debugger ..... 248 12.1.4 VM core format ..... 250 12.2 General ..... 251 ## Contents 12.2.1 Guest shows tinker with the exact details of virtual machine execution. Like the VM debugger described in chapter 12.1.3, The built-in VM debugger, page 248, these commands are only useful if you are very familiar with see chapter 12.1.4, VM core format, page 250. This corresponds to the writecore command in the debugger. ## --filename=filename The name of the output file. ## debugvm info VBoxManage debugvm

problems ..... 246 12.1.2 Collecting debugging information ..... 247 12.1.3 The built-in VM debugger ..... 247 12.1.4 VM core format ..... 249 12.2 General ..... 250 ## Contents 12.2.1 Guest shows tinker with the exact details of virtual machine execution. Like the VM debugger described in chapter 12.1.3, The built-in VM debugger, page 247, these commands are only useful if you are very familiar with see chapter 12.1.4, VM core format, page 249. This corresponds to the writecore command in the debugger. ## --filename=filename The name of the output file. ## debugvm info VBoxManage debugvm

problems ..... 246 12.1.2 Collecting debugging information ..... 247 12.1.3 The built-in VM debugger ..... 247 12.1.4 VM core format ..... 249 12.2 General ..... 250 ## Contents 12.2.1 Guest shows tinker with the exact details of virtual machine execution. Like the VM debugger described in chapter 12.1.3, The built-in VM debugger, page 247, these commands are only useful if you are very familiar with see chapter 12.1.4, VM core format, page 249. This corresponds to the writecore command in the debugger. ## --filename=filename The name of the output file. ## debugvm info VBoxManage debugvm

problems ..... 244 12.1.2 Collecting debugging information ..... 245 12.1.3 The built-in VM debugger ..... 245 12.1.4 VM core format ..... 247 12.2 General ..... 248 12.2.1 Guest shows IDE/SATA tinker with the exact details of virtual machine execution. Like the VM debugger described in chapter 12.1.3, The built-in VM debugger, page 245, these commands are only useful if you are very familiar with see chapter 12.1.4, VM core format, page 247. This corresponds to the writecore command in the debugger. ## --filename=filename The name of the output file.