warning: declaration shadows a variable in namespace 'x265' [-Wshadow]

[Nomis101]

While building x265 inside HandBrake, I see some of the following warnings:

‌

/HandBrake/build/contrib/x265/x265_3.1.2/source/common/scalinglist.h:36:12: warning: declaration shadows a variable in namespace 'x265' [-Wshadow]
    enum { NUM_SIZES = 4 };            // 4x4, 8x8, 16x16, 32x32
           ^
/HandBrake/build/contrib/x265/x265_3.1.2/source/common/cudata.h:51:5: note: previous declaration is here

    NUM_SIZES
    ^

and

‌

/HandBrake/build/contrib/x265/x265_3.1.2/source/common/scalinglist.h:36:12: warning: declaration shadows a variable in namespace 'x265_10bit' [-Wshadow]
    enum { NUM_SIZES = 4 };            // 4x4, 8x8, 16x16, 32x32
           ^
/HandBrake/build/contrib/x265/x265_3.1.2/source/common/cudata.h:51:5: note: previous declaration is here
    NUM_SIZES
    ^

and

‌

/HandBrake/build/contrib/x265/x265_3.1.2/source/common/scalinglist.h:36:12: warning:

declaration shadows a variable in namespace 'x265_12bit' [-Wshadow]

enum { NUM_SIZES = 4 }; // 4x4, 8x8, 16x16, 32x32

^

/HandBrake/build/contrib/x265/x265_3.1.2/source/common/cudata.h:51:5: note: previous declaration is here

NUM_SIZES

^

‌

This is on macOS 10.14, but I think holds true for any other OS.