2024年4月16日发(作者：)

gdb调试方法说明（GDB debug method instructions）

GDB debugging essence and examples

List of column files

(GDB) list, Line1, line2

Two: executive procedure

To run the program for debugging, you can use the run command,

behind it can follow to any of the parameters of the program,

including the standard input and output descriptor (< and >)

and shell wildcards (* and? [[]]).

If you use the run command without arguments, it is useful for

GDB to use the parameters you gave to the previous run command

again.

Using the set args command, you can modify the parameters that

are sent to the program, and you can use the show args command

to see a list of its default parameters.

(GDB) set args - B - x

(GDB) show args

The backtrace command provides a backward tracking function for

the stack.

The Backtrace command generates a list that contains the

parameters that start with the recent process, so the effective

procedure and the parameters that call them.

Three: display data

Using the print command, you can check the values of each

variable.

(GDB) print p (P is a variable name)

The whatis command displays the type of a variable

(GDB) whatis p

Type = int *

Print is a powerful command of GDB that uses it to display any

valid expressions in the language being debugged. In addition

to containing variables in your program, expressions can

include the following:

L calls to functions in a program

(GDB) print find_entry (1,0)

L data structures and other complex objects

(GDB) print *table_start

$8={e=reference= '000', location=0x0, next=0x0}