- How to print the string a pointer points to while debugging . . .
How do I inspect a string a pointer is pointing to when stepping through a program using GDB? I can see the a pointer is pointing to 0x82c6e10 I know it is a string How do I print it? Using printf("%s\n", 0x82c6e10) gives Bad format string, missing '"'
- Print Settings (Debugging with GDB) - sourceware. org
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 default is on For example, this is what a stack frame display looks like with set print address on:
- Debugging with GDB - Examining Data
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 default is on For example, this is what a stack frame display looks like, with set print address on:
- Debugging with GDB - Print Settings - GNU
If you have a pointer and you are not sure where it points, try `set print symbol-filename on' 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': (gdb) set print symbol-filename on (gdb) p a
- Debugging and Pointers
In general there are two ways that you can debug problems created by pointers--either use gdb or use print statements gdb is most helpful when your program seg faults because it can identify the line number where the seg fault occurred and this often gives you a good starting point for finding your bug print statements are most helpful when a variable has an unexpected value and you are
- Two handy GDB breakpoint tricks - null program
The problem is that feature I mentioned: The instruction pointer does not point at the int3 but the next instruction This confuses GDB, causing it to break in the wrong places, possibly even in the wrong scope
- How to view a pointer like an array in GDB? - Stack Overflow
It first casts p to a pointer-to-array type (instead of pointer-to-element type pointing to the first element), then dereferences that pointer to get an array object In C, this would decay back to a pointer in most contexts except as the operand of or sizeof, but gdb uses the array type directly to print the array
- How does gdb know the type of pointer, and why cant . . . - Reddit
How does gdb know the type of pointer, and why cant we do the same ? I was playing with gdb and I came across the whatis command that basically prints the type of given expression, my question is if the information exists, why cant we use it (or if we can how ?? )
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