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Oh I didn't realize its size varies on x86 and x64... I thought it's always 64-bit under compilers that target Linux! Today I learned...


There is a difference between 'long' and 'long long'. I believe the latter is always 64 bits on Linux.


I'm indeed aware of that one :-)


I think the size can vary by compiler rather than just by architecture.


Yeah it can but in practice systems have a canonical model in their official headers.


And yet msvc and gcc disagree on sizeof(long) on AMD64.

Edit: but of course you meant OS with system, not hardware architecture :)


MSVC on... Linux AMD64?


:) to be fair I did note my misunderstanding in my edit.




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