This is my C code
C:\Codes>gdb test -q
Reading symbols from C:\Codes\test.exe...done.
(gdb) list 1,15
1 #include<stdio.h>
2
3 int main()
4 {
5 int a = 12345;
6 int b = 0x12345;
7 printf("+-----+-------+---------+----------+\n");
8 printf("| Var | Dec | Hex | Address |\n");
9 printf("+-----+-------+---------+----------+\n");
10 printf("| a | %d | 0x%x | %p |\n",a,a,&a);
11 printf("| b | %d | 0x%x | %p |\n",b,b,&b);
12 printf("+-----+-------+---------+----------+\n");
13
14 return 0;
15 }
(gdb) set disassembly-flavor intel
And this is the standard output
C:\Codes>test
+-----+-------+---------+----------+
| Var | Dec | Hex | Address |
+-----+-------+---------+----------+
| a | 12345 | 0x3039 | 0022FF4C |
| b | 74565 | 0x12345 | 0022FF48 |
+-----+-------+---------+----------+
This is what I'm seeing in GDB
(gdb) break 7
Breakpoint 1 at 0x40135e: file test.c, line 7.
(gdb) run
Starting program: C:\Codes/test.exe
[New Thread 4044.0xab0]
Breakpoint 1, main () at test.c:7
7 printf("+-----+-------+---------+----------+\n");
(gdb) disassemble
Dump of assembler code for function main:
0x00401340 <+0>: push ebp
0x00401341 <+1>: mov ebp,esp
0x00401343 <+3>: and esp,0xfffffff0
0x00401346 <+6>: sub esp,0x20
0x00401349 <+9>: call 0x401990 <__main>
0x0040134e <+14>: mov DWORD PTR [esp+0x1c],0x3039
0x00401356 <+22>: mov DWORD PTR [esp+0x18],0x12345
=> 0x0040135e <+30>: mov DWORD PTR [esp],0x403024
0x00401365 <+37>: call 0x401c00 <puts>
0x0040136a <+42>: mov DWORD PTR [esp],0x40304c
0x00401371 <+49>: call 0x401c00 <puts>
0x00401376 <+54>: mov DWORD PTR [esp],0x403024
0x0040137d <+61>: call 0x401c00 <puts>
0x00401382 <+66>: mov edx,DWORD PTR [esp+0x1c]
0x00401386 <+70>: mov eax,DWORD PTR [esp+0x1c]
0x0040138a <+74>: lea ecx,[esp+0x1c]
0x0040138e <+78>: mov DWORD PTR [esp+0xc],ecx
0x00401392 <+82>: mov DWORD PTR [esp+0x8],edx
0x00401396 <+86>: mov DWORD PTR [esp+0x4],eax
0x0040139a <+90>: mov DWORD PTR [esp],0x403071
0x004013a1 <+97>: call 0x401c08 <printf>
0x004013a6 <+102>: mov edx,DWORD PTR [esp+0x18]
0x004013aa <+106>: mov eax,DWORD PTR [esp+0x18]
0x004013ae <+110>: lea ecx,[esp+0x18]
0x004013b2 <+114>: mov DWORD PTR [esp+0xc],ecx
0x004013b6 <+118>: mov DWORD PTR [esp+0x8],edx
0x004013ba <+122>: mov DWORD PTR [esp+0x4],eax
0x004013be <+126>: mov DWORD PTR [esp],0x40308c
0x004013c5 <+133>: call 0x401c08 <printf>
0x004013ca <+138>: mov DWORD PTR [esp],0x403024
0x004013d1 <+145>: call 0x401c00 <puts>
0x004013d6 <+150>: mov eax,0x0
0x004013db <+155>: leave
0x004013dc <+156>: ret
End of assembler dump.
(gdb)
The address for variables a & b is supposed to be at 0x22ff4c & 0x22ff48 respectively
(gdb) print &a
$1 = (int *) 0x22ff4c
(gdb) print &b
$2 = (int *) 0x22ff48
However, if you look at the following GDB disassemble output, the address was not 0x22ff4c & 0x22ff48, but 0x0040134e & 0x00401356
0x0040134e <+14>: mov DWORD PTR [esp+0x1c],0x3039
0x00401356 <+22>: mov DWORD PTR [esp+0x18],0x12345
I've also debug this on x32dbg but getting the same address too.
I'm confused here. What was the 0x0040134e & 0x00401356 if they are not the memory addresses for variables a & b?