This is meant to be a general place to list things that should be done "someday" CXX Runtime Library Tasks ========================= * Look into mirroring libsupc++'s typeinfo vtable layout when libsupc++/libstdc++ is used as the runtime library. * Investigate and document interoperability between libc++ and libstdc++ on linux. Do this for every supported c++ runtime library. Atomic Related Tasks ==================== * future should use for synchronization. Test Suite Tasks ================ * Improve the quality and portability of the locale test data. * Convert failure tests to use Clang Verify. Filesystem Tasks ================ * P0492r2 - Implement National body comments for Filesystem * INCOMPLETE - US 25: has_filename() is equivalent to just !empty() * INCOMPLETE - US 31: Everything is defined in terms of one implicit host system * INCOMPLETE - US 32: Meaning of 27.10.2.1 unclear * INCOMPLETE - US 33: Definition of canonical path problematic * INCOMPLETE - US 34: Are there attributes of a file that are not an aspect of the file system? * INCOMPLETE - US 35: What synchronization is required to avoid a file system race? * INCOMPLETE - US 36: Symbolic links themselves are attached to a directory via (hard) links * INCOMPLETE - US 37: The term “redundant current directory (dot) elements” is not defined * INCOMPLETE - US 38: Duplicates §17.3.16 * INCOMPLETE - US 39: Remove note: Dot and dot-dot are not directories * INCOMPLETE - US 40: Not all directories have a parent. * INCOMPLETE - US 41: The term “parent directory” for a (non-directory) file is unusual * INCOMPLETE - US 42: Pathname resolution does not always resolve a symlink * INCOMPLETE - US 43: Concerns about encoded character types * INCOMPLETE - US 44: Definition of path in terms of a string requires leaky abstraction * INCOMPLETE - US 45: Generic format portability compromised by unspecified root-name * INCOMPLETE - US 46: filename can be empty so productions for relative-path are redundant * INCOMPLETE - US 47: “.” and “..” already match the name production * INCOMPLETE - US 48: Multiple separators are often meaningful in a root-name * INCOMPLETE - US 49: What does “method of conversion method” mean? * INCOMPLETE - US 50: 27.10.8.1 ¶ 1.4 largely redundant with ¶ 1.3 * INCOMPLETE - US 51: Failing to add / when appending empty string prevents useful apps * INCOMPLETE - US 52: remove_filename() postcondition is not by itself a definition * INCOMPLETE - US 53: remove_filename()'s name does not correspond to its behavior * INCOMPLETE - US 54: remove_filename() is broken * INCOMPLETE - US 55: replace_extension()'s use of path as parameter is inappropriate * INCOMPLETE - US 56: Remove replace_extension()'s conditional addition of period * INCOMPLETE - US 57: On Windows, absolute paths will sort in among relative paths * INCOMPLETE - US 58: parent_path() behavior for root paths is useless * INCOMPLETE - US 59: filename() returning path for single path components is bizarre * INCOMPLETE - US 60: path("/foo/").filename()==path(".") is surprising * INCOMPLETE - US 61: Leading dots in filename() should not begin an extension * INCOMPLETE - US 62: It is important that stem()+extension()==filename() * INCOMPLETE - US 63: lexically_normal() inconsistently treats trailing "/" but not "/.." as directory * INCOMPLETE - US 73, CA 2: root-name is effectively implementation defined * INCOMPLETE - US 74, CA 3: The term “pathname” is ambiguous in some contexts * INCOMPLETE - US 75, CA 4: Extra flag in path constructors is needed * INCOMPLETE - US 76, CA 5: root-name definition is over-specified. * INCOMPLETE - US 77, CA 6: operator/ and other appends not useful if arg has root-name * INCOMPLETE - US 78, CA 7: Member absolute() in 27.10.4.1 is overspecified for non-POSIX-like O/S * INCOMPLETE - US 79, CA 8: Some operation functions are overspecified for implementation-defined file types * INCOMPLETE - US 185: Fold error_code and non-error_code signatures into one signature * INCOMPLETE - FI 14: directory_entry comparisons are members * INCOMPLETE - Late 36: permissions() error_code overload should be noexcept * INCOMPLETE - Late 37: permissions() actions should be separate parameter * INCOMPLETE - Late 42: resize_file() Postcondition missing argument Misc Tasks ========== * Find all sequences of >2 underscores and eradicate them. * run clang-tidy on libc++ * Document the "conditionally-supported" bits of libc++ * Look at basic_string's move assignment operator, re LWG 2063 and POCMA * Put a static_assert in std::allocator to deny const/volatile types (LWG 2447)