What's the life-time of a function parameter (citation needed)? [closed]

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Is the life-time of a function parameter equal of an unnamed temporary passed as an 'rvalue' reference (which is equal of the expression called the function)? My 'gcc' compiler shows that it is. But I want to see an actual standard document that states it too (possible the newest 'C++11' or 'C++14').

来源：https://stackoverflow.com/questions/27157204/whats-the-life-time-of-a-function-parameter-citation-needed