bug in gawk

[yus]

Hi,

When I use gawk to handle some data.
I found gawk can't work normally.
For the same gawk code in untilmin.awk, it will has different action for
differen input file.
If I use correct.txt as input file , it work normally and put out right
result.
but if I use incorrect.txt as input file, it can't put out right result as
we expected.

You can find the output in .out file in attachment.
The cmd I use is :
gawk -f untilmin.awk incorrect.txt > incorrect.out

Please help to check this problem.
Waiting for your response.

Thank you very much.

Brs,
Su Yu

correct.txt
Description: Text document

incorrect.out
Description: Binary data

incorrect.txt
Description: Text document

untilmin.awk
Description: Binary data

correct.out
Description: Binary data