Nikol Johnson Biography Career Net Worth Kadhal Net Output formats (debugging with gdb)by default, gdb prints a value according to its data type. 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?.
Nikol Johnson Biography Career Net Worth Kadhal Net By default, gdb prints a value according to its data type. 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. With this format, pointers to single byte data are displayed as null terminated strings and arrays of single byte data are displayed as fixed length strings. other values are displayed in their natural types. without this format, gdb displays pointers to and arrays of char, unsigned char @w , and signed char @w as strings. Without this format, gdb displays pointers to and arrays of char, unsigned char, and signed char as strings. single byte members of a vector are displayed as an integer array. r print using the ` raw ' formatting. by default, gdb will use a python based pretty printer, if one is available (see pretty printing). Formatting documentation the gdb 4 release includes an already formatted reference card, ready for printing with postscript or ghostscript, in the `gdb' subdirectory of the main source directory (7). if you can use postscript or ghostscript with your printer, you can print the reference card immediately with `refcard.ps' .
Nikol Johnson Biography Career Net Worth Kadhal Net Without this format, gdb displays pointers to and arrays of char, unsigned char, and signed char as strings. single byte members of a vector are displayed as an integer array. r print using the ` raw ' formatting. by default, gdb will use a python based pretty printer, if one is available (see pretty printing). Formatting documentation the gdb 4 release includes an already formatted reference card, ready for printing with postscript or ghostscript, in the `gdb' subdirectory of the main source directory (7). if you can use postscript or ghostscript with your printer, you can print the reference card immediately with `refcard.ps' . If you omit exp, gdb displays the last value again (from the value history; see section value history). this allows you to conveniently inspect the same value in an alternative format. When gdb prints a symbolic address, it normally prints the closest earlier symbol plus an offset. if that symbol does not uniquely identify the address (for example, it is a name whose scope is a single source file), you may need to clarify. one way to do this is with info line, for example `info line *0x4537'. alternately, you can set gdb to print the source file and line number when it.
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