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0 pointskccqzy9y ago0 comments

With -O2 gcc actually compiles the program to

    xorl %eax, %eax
    ret

That is, it optimized away everything.

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1 comments · 1 top-level

acqq9y ago

Yes, that's the correct optimization. That code obviously can't perform printf("error\n") to manifest the bug, and obviously both additions were made compile-time producing the results that are equal.

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