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GDB: Print the value of memory address - Stack Overflow ;DRTL To print a value in GDB use print or (p in short form) command in your command x 0x00000000004004fc You have missed p command You have to use x with p command pair to print value as hexadecimal format, like below: (gdb) p x 0x00000000004004fc If the memory address is some pointer to some structure then you have to cast the memory location before using the pointer For example, struct
GDB Command Reference - x command - VisualGDB Compatibility with VisualGDB You can use the x command normally using the GDB Session window in Visual Studio See also Expression evaluating commands , display , print , set print address , set print array-indexes , set print array , set print elements , set print frame-arguments , undisplay ,
Output Formats (Debugging with GDB) - sourceware. org 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
Debugging with GDB - Memory - GNU The default for addr is usually just after the last address examined--but several other commands also set the default address: info breakpoints (to the address of the last breakpoint listed), info line (to the starting address of a line), and print (if you use it to display a value from memory)
Memory (Debugging with GDB) - sourceware. org addr is the address where you want GDB to begin displaying memory The expression need not have a pointer value (though it may); it is always interpreted as an integer address of a byte of memory See Expressions, for more information on expressions
Getting the Value of a Memory Address From the Command Line Notably, this value is stored after 2A0 bytes within the range of the heap address, specifically at the virtual memory address 558f54a6e2a0 5 Using GDB The second method that we’ll look at for getting the value of a memory address uses the GDB debugger
CS4630: GDB quick reference - University of Virginia x 100bx 0x12345678 — print out 100 bytes of memory starting at address 0x12345678, as a sequence of 1-byte hexadecimal numbers x 2gx 0x12345678 — print out 16 bytes of memory starting at address 0x12345678, as a two eight-byte hexdecimal numbers