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13.2 Integer Overflow

Although some traditional C programs assume that signed integer overflow wraps around reliably using two’s complement arithmetic, the C standard says that program behavior is undefined on overflow, and these C programs may not work on many modern implementations.

• Basics of Integer Overflow
• Examples of Code Assuming Wraparound Overflow
• Optimizations That Break Wraparound Arithmetic
• Practical Advice for Signed Overflow Issues
• Signed Integer Division and Integer Overflow