I propose enabling -fextended-identifiers by default for the appropriate standard versions (i.e. all C++ versions, C99 and above for C - so enabled by default for C now the default C version is gnu11). Any comments or objections?
The following is my list of desirable improvements in the existing -fextended-identifiers support or testcases for it, but I don't think these issues need to stop it from being enabled by default. * C -aux-info. * ObjC -gen-decls. * Use DW_AT_use_UTF8 in DWARF-3 debug info for compilation units built with extended identifiers enabled (or unconditionally). * cpplib spelling preservation; correct output for -d (UCNs), DWARF debug info for macros (UCNs), PCH and PCH tests. * cpplib diagnostics (outputting characters or UCNs as appropriate depending on the locale, as done for identifiers in non-cpplib diagnostics). * C++ test for UCN linking with C and extern "C". * Testcase for pp-numbers containing UCNs, $ or other equivalent characters. * Debug info generation tests (at least add -g to existing tests, plus UCNs for fields / struct tags / enum values / goto labels / macros -g3). * C++ translation of extended characters (including $@` and various control characters) to UCNs in phase 1 (note diagnostics thus needed, but not for C++11, for control characters in strings / character constants as those UCNs invalid). * Actual UTF-8 in identifiers (?). -- Joseph S. Myers jos...@codesourcery.com
