[Bug c/114657] Invalid type conversion from some _BitInt bit-fields
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114657 --- Comment #3 from Joseph S. Myers --- https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2958.htm has my analysis of the various notions of "type" used in relation to bit-fields and the questions of what expressions are considered to have special properties associated with referring to a bit-field.
[Bug c/114657] Invalid type conversion from some _BitInt bit-fields
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114657 --- Comment #2 from Jakub Jelinek --- In particular, 6.5.1.1/2 says "The type of the controlling expression is the type of the expression as if it had undergone an lvalue conversion, array to pointer conversion, or function to pointer conversion." but doesn't list integer promotions (if those were to occur, you'd e.g. never be able to match a char, signed char, unsigned char, short, unsigned short types with _Generic because everything would be promoted to int.
[Bug c/114657] Invalid type conversion from some _BitInt bit-fields
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114657 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org, ||jsm28 at gcc dot gnu.org --- Comment #1 from Jakub Jelinek --- I believe Joseph said this isn't well specified in the C standard, see https://gcc.gnu.org/pipermail/gcc-patches/2023-July/625765.html If you use something like + 0uwb it should be the type after the integral promotions and so what the standard specifies for integral promotions of the _BitInt bit-fields.
