7c5890cc0a
C2x adds u8'' character constants to C. This patch adds the corresponding GCC support. Most of the support was already present for C++ and just needed enabling for C2x. However, in C2x these constants have type unsigned char, which required corresponding adjustments in the compiler and the preprocessor to give them that type for C. For C, it seems clear to me that having type unsigned char means the constants are unsigned in the preprocessor (and thus treated as having type uintmax_t in #if conditionals), so this patch implements that. I included a conditional in the libcpp change to avoid affecting signedness for C++, but I'm not sure if in fact these constants should also be unsigned in the preprocessor for C++ in which case that !CPP_OPTION (pfile, cplusplus) conditional would not be needed. Bootstrapped with no regressions on x86_64-pc-linux-gnu. gcc/c: * c-parser.c (c_parser_postfix_expression) (c_parser_check_literal_zero): Handle CPP_UTF8CHAR. * gimple-parser.c (c_parser_gimple_postfix_expression): Likewise. gcc/c-family: * c-lex.c (lex_charconst): Make CPP_UTF8CHAR constants unsigned char for C. gcc/testsuite: * gcc.dg/c11-utf8char-1.c, gcc.dg/c2x-utf8char-1.c, gcc.dg/c2x-utf8char-2.c, gcc.dg/c2x-utf8char-3.c, gcc.dg/gnu2x-utf8char-1.c: New tests. libcpp: * charset.c (narrow_str_to_charconst): Make CPP_UTF8CHAR constants unsigned for C. * init.c (lang_defaults): Set utf8_char_literals for GNUC2X and STDC2X. From-SVN: r278265 |
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| .. | ||
| include | ||
| po | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| Makefile.in | ||
| aclocal.m4 | ||
| charset.c | ||
| config.in | ||
| configure | ||
| configure.ac | ||
| directives-only.c | ||
| directives.c | ||
| errors.c | ||
| expr.c | ||
| files.c | ||
| identifiers.c | ||
| init.c | ||
| internal.h | ||
| lex.c | ||
| line-map.c | ||
| location-example.txt | ||
| macro.c | ||
| makeucnid.c | ||
| mkdeps.c | ||
| pch.c | ||
| symtab.c | ||
| system.h | ||
| traditional.c | ||
| ucnid.h | ||
| ucnid.tab | ||