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GDB: Print the value of memory address - Stack Overflow If you want the memory address of variable c, p c would get the addre ss What makes you think that 0x00000000004004 is memory address oc c? That address looks more like memory address of assembly code and 0x85f445c7 represents the hexa representation of machine code
How to get the symbol name for a memory address in GDB? I believe you're looking for: info symbol <addresss> Print the name of a symbol which is stored at the address addr If no symbol is stored exactly at addr, GDB prints the nearest symbol and an offset from it Example: (gdb) info symbol 0x400225 _start + 5 in section text of tmp a out (gdb) info symbol 0x2aaaac2811cf __read_nocancel + 6 in section text of usr lib64 libc so 6 You can read
gdb - Find the exact address of variable Buf - Stack Overflow The operator will work when gdb is set to C language mode (and Objective-C) In any language mode you can use (gdb) info address buf Symbol "buf" is static storage at address 0x903278 (The output does not correspond exactly to your code ) I am writing this answer because this question is found even by people looking for the answer for other languages (including myself) One can also always
c - Display value found at given address gdb - Stack Overflow Is this the correct way to read the value of an address in gdb? I was kind of expecting to find a more ascii friendly hex value I am interested in finding the stored string value that is compared against Also do you have a favorite gui tool that you like to use for this type of debugging? I have been thinking about trying ddd
Using GDB and checking the memory layout of Data 2) if I use GDB and and use x to get real memory addresses I get the following: On most desktops, and Linux in particular, the address shown is virtual, not 'real' (not actual) In Embedded tool suites (such as vxWorks), even with virtual memory, the debugger can show hw addresses and values Note: I have not yet used any form of Linux on a system with actual hw addresses to access, but I have
GDB: Listing all mapped memory regions for a crashed process In GDB 7 2: (gdb) help info proc Show proc process information about any running process Specify any process id, or use the program being debugged by default Specify any of the following keywords for detailed info: mappings -- list of mapped memory regions stat -- list a bunch of random process info status -- list a different bunch of random process info all -- list all available proc
How can I get GDB to tell me what address caused a segfault? Run your program under GDB When the segfault occurs, GDB will inform you of the line and statement of your program, along with the variable and its associated address You can use the "print" (p) command in GDB to inspect variables If the crash occurred in a library call, you can use the "frame" series of commands to see the stack frame in
How to find the address of a string in memory using GDB? If you want to search in the whole address space of the process, you need to get the memory mapping for your process and use the start address the end address with the find command in gdb
How can I access particular memory address during a GDB session? 2 Those aren't actually memory addresses It's a compiler optimization to represent ASCII values using 64-bit constants Instead of actually calling strcpy() the compiler is moving the string constant values through registers 0x206f746e656d654d is the ASCII values for the string 'Memento ' (with a space) in x86 little-endian format
c - How to use gdb to explore the stack heap? - Stack Overflow prompt> gdb x_bstree c (gdb) #prompt (gdb) b 123 #break at line 123 (gdb) r #start program Now your program halts at line 123 of your program Now you can examine variables in stack or heap using print For stack variables just use print <varname> For heap variables (pointers) use print <*varname>