703837b2cc
This patch implements the core language and compiler dependent library changes adopted for C2X via WG14 N2653. The changes include: - Change of type for UTF-8 string literals from array of const char to array of const char8_t (unsigned char). - A new atomic_char8_t typedef. - A new ATOMIC_CHAR8_T_LOCK_FREE macro defined in terms of the existing __GCC_ATOMIC_CHAR8_T_LOCK_FREE predefined macro. gcc/ChangeLog: * ginclude/stdatomic.h (atomic_char8_t, ATOMIC_CHAR8_T_LOCK_FREE): New typedef and macro. gcc/c/ChangeLog: * c-parser.cc (c_parser_string_literal): Use char8_t as the type of CPP_UTF8STRING when char8_t support is enabled. * c-typeck.cc (digest_init): Allow initialization of an array of character type by a string literal with type array of char8_t. gcc/c-family/ChangeLog: * c-lex.cc (lex_string, lex_charconst): Use char8_t as the type of CPP_UTF8CHAR and CPP_UTF8STRING when char8_t support is enabled. * c-opts.cc (c_common_post_options): Set flag_char8_t if targeting C2x. gcc/testsuite/ChangeLog: * gcc.dg/atomic/c2x-stdatomic-lockfree-char8_t.c: New test. * gcc.dg/atomic/gnu2x-stdatomic-lockfree-char8_t.c: New test. * gcc.dg/c11-utf8str-type.c: New test. * gcc.dg/c17-utf8str-type.c: New test. * gcc.dg/c2x-utf8str-type.c: New test. * gcc.dg/c2x-utf8str.c: New test. * gcc.dg/gnu2x-utf8str-type.c: New test. * gcc.dg/gnu2x-utf8str.c: New test. |
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| .. | ||
| float.h | ||
| iso646.h | ||
| stdalign.h | ||
| stdarg.h | ||
| stdatomic.h | ||
| stdbool.h | ||
| stddef.h | ||
| stdfix.h | ||
| stdint-gcc.h | ||
| stdint-wrap.h | ||
| stdnoreturn.h | ||
| tgmath.h | ||
| unwind-arm-common.h | ||
| varargs.h | ||