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The debugging interface of Eclipse with a program suspended at a breakpoint. Panels with stack trace (upper left) and watched variables (upper right) can be seen. In software development, a breakpoint is an intentional stopping or pausing place in a program, put in place for debugging purposes. It is also sometimes simply referred to as a pause
Winpdb debugging itself. A debugger is a computer program used to test and debug other programs (the "target" programs). Common features of debuggers include the ability to run or halt the target program using breakpoints, step through code line by line, and display or modify the contents of memory, CPU registers, and stack frames.
This led to the development of proprietary software from several independent vendors that provided similar features but deliberately restricted breakpoints and instruction stepping to particular application programs in particular address spaces and threads. The program state (as applicable to the chosen application/thread) was saved for ...
A good development tool environment is important to reduce total development time and cost. Users want to debug their application program under conditions that imitate the actual setup of their system. Because of that, the capability to debug a user program in an actual target system is required. This is known as in-circuit debugging.
Breakpoints... Programs halt when a specified event, a breakpoint, has occurred. The event can be specified as a code execution address, or as a data access (read or write) to an address with a specified value. Nexus breakpoints can be set at any address, including flash or ROM memory; CPUs may also provide special breakpoint instructions.
The same mode is also used by KGDB for debugging a running Linux kernel on the source level with gdb. With KGDB, kernel developers can debug a kernel in much the same way as they debug application programs. It makes it possible to place breakpoints in kernel code, step through the code, and observe variables.
For software, debugging tactics can involve interactive debugging, control flow analysis, log file analysis, monitoring at the application or system level, memory dumps, and profiling. Many programming languages and software development tools also offer programs to aid in debugging, known as debuggers.
A breakpoint immediately after a Document.Write is ignored. Entering a Document.Write command while debugging, or refreshing a document in Internet Explorer while debugging it, can cause hangs or other unexpected behavior. Unlike in other debuggers, there is no Watch window for monitoring variables; they must be checked via manual commands.