Sometimes this is not what you want For example, you might want to print a number in hex, or a pointer in decimal Or you might want to view data in memory at a certain address as a character string or as an instruction To do these things, specify an output format when you print a value. I'd like to do printf style printing from gdb For instance, i want to print a variable value, but with some text to describe what it is
Can it be done, and if so, can you give an example? Then you can determine the name and source file location of the variable where it points, using `p/a pointer' This interprets the address in symbolic form For example, here gdb shows that a variable ptt points at another variable t, defined in `hi2.c' Print as an address, both absolute in hexadecimal and as an offset from the nearest preceding symbol You can use this format used to discover where (in what function) an unknown address is located
Show whether or not gdb will print the source file name and line number of a symbol in the symbolic form of an address Another situation where it is helpful to show symbol filenames and line numbers is when disassembling code Gdb shows you the line number and source file that corresponds to each instruction. Format if specified, allows overriding the output format used by the command Also, the program is compiled without optimization Debugging with gdb we can use the gdb command to debug the example program
Watchpoint save time in gdb Pretty printing pretty printing is displaying information in the terminal in such a way that the information can be understood more easily at a glance, saving time when debugging It is most often done using colour and formatting of data, as opposed to printing out a data structure in its raw form.
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