The addresses and contents printed by the x command are not saved in the value history because there is often too much of them and they would get in the way. Instead, GDB makes these …

Jul 22, 2010 · I know that we can use several commands to access and read memory: for example, print, p, x... But how can I change the contents of memory at any specific location …

Fortunately, gdb provides another command for examining the contents of memory directly—that is, the actual bit patterns. In order to use this command, we need to determine the actual …

GDB prints memory addresses showing the location of stack traces, structure values, pointer values, breakpoints, and so forth, even when it also displays the contents of those addresses. …

The contents of that address, as examined, are available in the convenience variable $__. If the x command has a repeat count, the address and contents saved are from the last memory unit …

Nov 25, 2025 · One question that often arises is: *Can `gdb` modify the assembly code of a running program in real-time?* The short answer is **yes**—but with caveats. `gdb` lets you …

Apr 8, 2021 · Modifying memory is similar to modifying registers in the sense that any memory location can be a variable in GDB. So in my example, I want to change the contents of the …

Within GDB and this document, the term addressable memory unit (or memory unit for short) is used when explicitly referring to a chunk of data of that size. The word byte is used to refer to …