Here's one example: https://stackoverflow.com/questions/54510094/why-how-does-gcc-compile-the-undefined-behaviour-in-this-signed-overflow-test-so https://stacko

Here's one example: https://stackoverflow.com/questions/54510094/why-how-does-gcc-compile-the-undefined-behaviour-in-this-signed-overflow-test-so https://stackoverflow.com/questions/54510094/why-how-does-gc... Worked as expected on X86, not as expected on ARM64. One of the answers shows the question author probably used a different GCC version, but it still feels like a good example.