c++ - conversion from 'uint64_t' to 'unsigned int' -


for following function in microsoft visual studio 2015 rc, 2 warnings regarding comparison of signed , unsigned variables.

uint64_t findmin(vector<uint64_t> &v) {    uint64_t min = 0;    uint64_t s = v.size();    (uint64_t = 0; < s; ++i) {        if (v[i] != 0) {   // warning            min = v[i];    // warning            break;        }    }    ...  }

the warning is

warning c4244: 'argument': conversion 'uint64_t' 'unsigned int', possible loss of data

that weird because @ least sure min , v[i] both have uint64_t variables , obvious.

is related rc edition? or there behind that unaware of that?

the "argument" compiler warning i argument operator[] in v[i] (note argument on either of lines).

the parameter of operator[] overload of type size_t. in 32-bit builds size_t 32-bit unsigned integer. conversion of 64-bit unsigned i 32-bit unsigned parameter type narrowing conversion.


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