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 ?
It is not known yet whether the new issue with the Galaxy Note 8 is a software or hardware bug.
It's not impossible to find a hardware bug or errata to target, but such attacks are typically an order of magnitude more difficult and rely on your target having a specific make or model of CPU.
The Intel Pentium hardware bug really was minor compared to many software bugs that users wrestle with every day.
Galaxy Nexus is also reported to have suffered from a hardware bug that forces the phone to automatically change the volume.
However, a hardware bug could be a much more difficult issue to solve.
The two hardware bugs discovered can be exploited to allow the memory content of a computer to be leaked.
In the SSD storage space, it is extremely important for design teams to study the architecture and tune the performance while finding deep hardware bugs in the pre-silicon stage.
20 ( ANI ): Apple has reportedly issued an EFI firmware update for the recently launched Mac Pro, fixing some hardware bugs that were identified since its release.

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