Method for operating a computer system, byte code verifier and computer system
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United States of America Patent
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Jan 27, 2004
Grant Date -
N/A
app pub date -
Jun 12, 2000
filing date -
Jun 10, 1999
priority date (Note) -
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Abstract
The invention is directed to a method for operating a computer system, as well as to a byte code verifier and to a computer system. The inventive method checks whether a computer program loaded onto a computer system exercises an illegal access to a variable, i.e. whether the variable is initialized before it is read. This test ensues before the execution of the program, so that such a test no longer need be performed upon execution of the program. The inventive method requires little memory space in the testing of the program and nonetheless carries out a complete test. Since the testing ensues before the execution of the program, the program execution itself is considerably speeded up since no further test is thereby required.
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