I am trying to debug a stack corruption ( my guess) occurring in my program.

As I map all the local variable locations on stack. I see a lot of gap between certain variables.

Var      Stack Address
sp       47f0360
msg      47f0370
p        47f0378
< Small gap    >
key      47f03d0
conn     47f03e8
tmpkey   47f03f0
<   Gap 
           >
tbl1     47f0a30
ret      47f0a3c
tbl      47f0a40
tmpPtr   47f0a48
conn_timer  47f0a50
req      47f0a58
msgHdr   47f0a60
rspMsg   47f0a68
p_wrk    47f0a70
rsp      47f0a78
bp       47f0a90

Without looking at the source code, is it possible to guess any reason about such gaps. Any non standard, non trivial patterns which can give some clue?