Setting Breakpoints in GDB on Linux
In Linux, you can use GDB (GNU Debugger) to set breakpoints. Here are several commonly used methods for setting breakpoints.
- Manually add breakpoints in the source code: Add the break keyword before the line where you wish to set the breakpoint. For example, break main.c:10 will set a breakpoint at line 10 in the main.c file.
- Setting a breakpoint using function names: You can set a breakpoint by using a function name as a parameter. For example, “break main” will set a breakpoint in the main function of the program.
- Set breakpoints using addresses: You can set breakpoints by using hexadecimal addresses as parameters. For example, “break *0x12345678” will set a breakpoint at address 0x12345678.
- Set breakpoints with conditions: You can use conditional expressions as parameters to set breakpoints. For example, “break main if argc > 5” will set a breakpoint in the main function, and only when the number of command-line arguments is greater than 5.
- You can set a temporary breakpoint using the tbreak command, which will be automatically deleted after being triggered once.
- Conditional breakpoints can be set using the watch command, which will trigger the breakpoint when the value of a specific variable changes.
These are just some common ways to set breakpoints, GDB also provides many other functions and commands for more precise breakpoint setting and debugging operations.