software bug

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software bug

A problem that causes a program to produce invalid output or to crash (lock up). The problem is either insufficient logic or erroneous logic. For example, a program can crash if there are not enough validity checks performed on the input or on the calculations themselves, and the computer attempts to divide by zero. Bad instruction logic misdirects the computer to a place in the program where an instruction does not exist, and it crashes.

A program with bad logic may produce bad output without crashing, which is the reason extensive testing is required. For example, if the program is supposed to add an amount, but subtracts it instead, bad output results, although the computer keeps running. See abend, bug and buggy.
References in periodicals archive ?
Unfortunately, the collection of clips are held together by a storyline involving a cyberbabe, Phig (voiced by Jenna Elfman), battling a bunch of annoying computer bugs intent on destroying her universe.
There are apparently some 200 computer bugs in the system according to Computer Weekly, but a NATS spokesperson has stated that the 'bug count' is decreasing rapidly and that the announcement of an opening date was based on the service's confidence that all issues will be resolved by 2002.
A statement issued by the participants said the countries must prevent computer bugs from seriously damaging electricity supply and other infrastructure for the health-service sector, but advised hospitals to be prepared.
And there is no information on what steps a huge number of these companies have taken to ensure they won't have catastrophic accidents because of Year 2000 computer bugs lurking in their operations.
The most common reasons for PC rage are crashes, computer bugs and losing important documents.
As a result of Unisys' lack of follow-up work to correct addresses and fix computer bugs, hundreds and possibly thousands of verifications have not reached physicians.
has developed the industry's first truly automated technical support system giving companies an economical, fully automated support system that proactively provides patches and fixes to security holes, viruses and computer bugs, as Mr.
The firm is a private, nonprofit corporation, but operates much like a venture-capital fund, with the added punch of providing agency experts to help start-ups if they encounter computer bugs or gliches, writes Special Correspondent Karen Breslau.
Company officials said after the close of trading Wednesday that potential buyers of IBM's network and database servers are postponing purchases until after concerns about Year 2000 computer bugs are fully resolved.
There's hope, however, as the insurance industry develops risk management and risk transfer products that will help take the sting out of computer bugs.
For all the doubling we were subjected to - computer bugs, World War II combat, television satires, those Earth-threatening space rocks - there was more than enough diversity to satisfy every taste.
com will enable companies to reduce customer service costs by allowing end users to search for potentially harmful computer bugs and implement known fixes, thereby avoiding costly inquiries to IT helpdesk personnel.

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