radiant/texwindow.cpp:584:32: warning: the value of the size argument in 'strncat' is too large, might lead to a buffer overflow [-Wstrncat-size]
strncat( shaderfile, colon, sizeof( shaderfile ) );
^~~~~~~~
radiant/texwindow.cpp:584:32: note: change the argument to be the free space in the destination buffer minus the terminating null byte
strncat( shaderfile, colon, sizeof( shaderfile ) );