080483fd <foo>:
80483fd: 55 push %ebp
80483fe: 89 e5 mov %esp,%ebp
8048400: 83 ec 58 sub $0x58,%esp
8048403: 8d 45 b8 lea -0x48(%ebp),%eax
8048406: 89 04 24 mov %eax,(%esp)
8048409: e8 c2 fe ff ff call 80482d0 <gets@plt>
804840e: c9 leave
804840f: c3 ret
なんだかしらんけど 0x48 == 72 bytes 確保してるので…