c++ - arbitrarily sized enum values -

i'm compiling code written gcc, in visual c++ 2012. i'm getting warnings thrown enum value truncation following enum (due value being outside range of int):

enum tile_flags {    tile_flag_inner_flame= 0x10000000ull,     tile_flag_constricted= 0x20000000ull,      tile_flag_mimic_inept 0x2000000000ull     tile_flag_mimic 0x4000000000ull     tile_flag_mimic_raven 0x6000000000ull     tile_flag_mimic_mask 0x6000000000ull } 

when compiling x86, appear msvc truncates enum values fit in 32bits. however, no truncation occurs in gcc. happening on gcc? , how can make work msvc?

from n3485, § 7.2/6:

for enumeration underlying type not fixed, underlying type integral type can represent enumerator values defined in enumeration. if no integral type can represent enumerator values, enumeration ill-formed. implementation-defined integral type used underlying type except underlying type shall not larger int unless value of enumerator cannot fit in int or unsigned int. if enumerator-list empty, underlying type if enumeration had single enumerator value 0.

therefore, if msvc has necessary long long support, should make underlying type anyway. seeing how doesn't, there's 1 thing can try in order coax it.

specify underlying type:

enum tile_flags : unsigned long long {     ... };