I tried debugging as advised

Here is the output

Use of uninitialized value $pattern_list[1] in print at try_expect.pl 
+line 24.
1SWBKPT hit for SLOT 1..!!  PC-Value : 0x124     Blk Count = 1  Cycles
+ : 332
sproc1>loadprg a.out
Endianness of the ELF file:0
.text matched [text segment]
flag = 0x3
.ctors matched [data segment]
flag = 0x3
.dtors matched [data segment]
flag = 0x3
.data matched [data segment]
sproc1>run
Run mode selected
Buffer Empty = 32
Buffer Empty = 32
Buffer Empty = 32
Buffer Empty = 32
Buffer Empty = 28

Expect=GLOB(0xa088960)
[download]

Now if am not wrong then $pattern_list1 should give me the value that would have been returned if expect() had been called in a scalar context. But its shows uninitialized. Now how should I set an expect for nothing....Help please

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