Are there real world cases where compilers in C produced object code that functioned almost identically as the source code described, but in the end turned out that the optimizations turned (or could turn) disastrous?
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Example:
if(something || i++). Let's assume something istrue. An optimization would be to just skipi++since the or statement is alreadytrue. It depends on the compiler and its configuration whether the second statement is actually executed or not. So this would be the one example I can think of where the compiler optimizations could lead to 'unexpected' results.