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Possible Duplicate: What is the difference between r-value references and l-value references? (CodeGen) I was wondering, can anyone explain what R-Value references are on a technical level? By that I mean: What happens on assembler level when R-Value references are created. For a small test to see what happens inside I wrote the following code: char c = 255; char &c2 = c; char &c3 = std::move(c); I know it makes no sense to create a R-Value reference to 'c', but just for the sake of testing I did it anyway, to see what it does. And here's the result: unsigned char c = 255; mov byte ptr [c],0FFh unsigned char &c2 = c; lea eax,[c] mov dword ptr [c2],eax unsigned char &&c3 = std::move(c); lea eax,[c] push eax call std::move<unsigned char &> (0ED1235h) add esp,4 mov dword ptr [c3],eax I am by far no asm expert but it looks to me that, in this case, 'c3' is a regular reference to 'c' in the end. If I bind the R-Value reference directly to a temporary (char &&c3 = 255), the last bit of assembler changes as such: unsigned char &&c3 = 255; mov byte ptr [ebp-29h],0FFh lea eax,[ebp-29h] mov dword ptr [c3],eax From the looks of this change, I assume that c3 still actually is a reference to some memory location which holds the value 255. So it's a regular reference - the value is not copied/assigned to c3. Is this true? Can anyone say if my assumptions are correct or if I am totally off the track? Until now I always thought of R-Value references to match a functions

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