In practice many portable C programs assume that signed integer overflow wraps around reliably using two’s complement arithmetic. Yet the C standard says that program behavior is undefined on overflow, and in a few cases C programs do not work on some modern implementations because their overflows do not wrap around as their authors expected. Conversely, in signed integer remainder, the C standard requires overflow behavior that is commonly not implemented.
|• Integer Overflow Basics||Why integer overflow is a problem|
|• Signed Overflow Examples||Examples of code assuming wraparound|
|• Optimization and Wraparound||Optimizations that break uses of wraparound|
|• Signed Overflow Advice||Practical advice for signed overflow issues|
|• Signed Integer Division|