https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81845
--- Comment #4 from Aleksandr Slobodeniuk <alenuke at yandex dot ru> --- > Fields of const-qualified structs and unions, that were initialized with > const literals ARE *constant expressions*, isn't it? Maybe that's the answer: C11 standard. 6.6 Constant expressions. > 6 Aninteger constant expression117) shall have integer type and shall only > have operands that are integer constants, enumeration constants, character > constants, sizeof expressions whose results are integer constants, > _Alignof expressions, and floating constants that are the immediate > operands of casts. Cast operators in an integer constant expression > shall only convert arithmetic types to integer types, except as part of > an operand to the sizeof or _Alignof operator.
