2d91f79dc9
gcc/cp/ * cvt.c (type_promotes_to): Handle char8_t promotion. * decl.c (grokdeclarator): Handle invalid type specifier combinations involving char8_t. * lex.c (init_reswords): Add char8_t as a reserved word. * mangle.c (write_builtin_type): Add name mangling for char8_t (Du). * parser.c (cp_keyword_starts_decl_specifier_p) (cp_parser_simple_type_specifier): Recognize char8_t as a simple type specifier. (cp_parser_string_literal): Use char8_array_type_node for the type of CPP_UTF8STRING. (cp_parser_set_decl_spec_type): Tolerate char8_t typedefs in system headers. * rtti.c (emit_support_tinfos): type_info support for char8_t. * tree.c (char_type_p): Recognize char8_t as a character type. * typeck.c (string_conv_p): Handle conversions of u8 string literals of char8_t type. (check_literal_operator_args): Handle UDLs with u8 string literals of char8_t type. * typeck2.c (ordinary_char_type_p): New. (digest_init_r): Disallow initializing a char array with a u8 string literal. gcc/c-family/ * c-common.c (c_common_reswords): Add char8_t. (fix_string_type): Use char8_t for the type of u8 string literals. (c_common_get_alias_set): char8_t doesn't alias. (c_common_nodes_and_builtins): Define char8_t as a builtin type in C++. (c_stddef_cpp_builtins): Add __CHAR8_TYPE__. (keyword_begins_type_specifier): Add RID_CHAR8. * c-common.h (rid): Add RID_CHAR8. (c_tree_index): Add CTI_CHAR8_TYPE and CTI_CHAR8_ARRAY_TYPE. Define D_CXX_CHAR8_T and D_CXX_CHAR8_T_FLAGS. Define char8_type_node and char8_array_type_node. * c-cppbuiltin.c (cpp_atomic_builtins): Predefine __GCC_ATOMIC_CHAR8_T_LOCK_FREE. (c_cpp_builtins): Predefine __cpp_char8_t. * c-lex.c (lex_string): Use char8_array_type_node as the type of CPP_UTF8STRING. (lex_charconst): Use char8_type_node as the type of CPP_UTF8CHAR. * c-opts.c: If not otherwise specified, enable -fchar8_t when targeting C++2a. * c.opt: Add the -fchar8_t command line option. libiberty/ * cp-demangle.c (cplus_demangle_builtin_types) (cplus_demangle_type): Add name demangling for char8_t (Du). * cp-demangle.h: Increase D_BUILTIN_TYPE_COUNT to accommodate the new char8_t type. From-SVN: r267923
8 lines
324 B
C
8 lines
324 B
C
// PR c++/48570
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// { dg-do compile { target c++11 } }
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constexpr wchar_t c1 = L"hi"[3]; // { dg-error "array subscript" }
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constexpr char16_t c2 = u"hi"[3]; // { dg-error "array subscript" }
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constexpr char32_t c3 = U"hi"[3]; // { dg-error "array subscript" }
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constexpr char c4 = u8"hi"[3]; // { dg-error "array subscript" }
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