1This is meant to be a general place to list things that should be done "someday"
2
3CXX Runtime Library Tasks
4=========================
5* Fix that CMake always link to /usr/lib/libc++abi.dylib on OS X.
6* Look into mirroring libsupc++'s typeinfo vtable layout when libsupc++/libstdc++
7  is used as the runtime library.
8* Investigate and document interoperability between libc++ and libstdc++ on
9  linux. Do this for every supported c++ runtime library.
10
11Atomic Related Tasks
12====================
13* future should use <atomic> for synchronization.
14
15Test Suite Tasks
16================
17* Improve the quality and portability of the locale test data.
18* Convert failure tests to use Clang Verify.
19
20Filesystem Tasks
21================
22* P0492r2 - Implement National body comments for Filesystem
23    * INCOMPLETE - US 25: has_filename() is equivalent to just !empty()
24    * INCOMPLETE - US 31: Everything is defined in terms of one implicit host system
25    * INCOMPLETE - US 32: Meaning of 27.10.2.1 unclear
26    * INCOMPLETE - US 33: Definition of canonical path problematic
27    * INCOMPLETE - US 34: Are there attributes of a file that are not an aspect of the file system?
28    * INCOMPLETE - US 35: What synchronization is required to avoid a file system race?
29    * INCOMPLETE - US 36: Symbolic links themselves are attached to a directory via (hard) links
30    * INCOMPLETE - US 37: The term “redundant current directory (dot) elements” is not defined
31    * INCOMPLETE - US 38: Duplicates §17.3.16
32    * INCOMPLETE - US 39: Remove note: Dot and dot-dot are not directories
33    * INCOMPLETE - US 40: Not all directories have a parent.
34    * INCOMPLETE - US 41: The term “parent directory” for a (non-directory) file is unusual
35    * INCOMPLETE - US 42: Pathname resolution does not always resolve a symlink
36    * INCOMPLETE - US 43: Concerns about encoded character types
37    * INCOMPLETE - US 44: Definition of path in terms of a string requires leaky abstraction
38    * INCOMPLETE - US 45: Generic format portability compromised by unspecified root-name
39    * INCOMPLETE - US 46: filename can be empty so productions for relative-path are redundant
40    * INCOMPLETE - US 47: “.” and “..” already match the name production
41    * INCOMPLETE - US 48: Multiple separators are often meaningful in a root-name
42    * INCOMPLETE - US 49: What does “method of conversion method” mean?
43    * INCOMPLETE - US 50: 27.10.8.1 ¶ 1.4 largely redundant with ¶ 1.3
44    * INCOMPLETE - US 51: Failing to add / when appending empty string prevents useful apps
45    * INCOMPLETE - US 52: remove_filename() postcondition is not by itself a definition
46    * INCOMPLETE - US 53: remove_filename()'s name does not correspond to its behavior
47    * INCOMPLETE - US 54: remove_filename() is broken
48    * INCOMPLETE - US 55: replace_extension()'s use of path as parameter is inappropriate
49    * INCOMPLETE - US 56: Remove replace_extension()'s conditional addition of period
50    * INCOMPLETE - US 57: On Windows, absolute paths will sort in among relative paths
51    * INCOMPLETE - US 58: parent_path() behavior for root paths is useless
52    * INCOMPLETE - US 59: filename() returning path for single path components is bizarre
53    * INCOMPLETE - US 60: path("/foo/").filename()==path(".") is surprising
54    * INCOMPLETE - US 61: Leading dots in filename() should not begin an extension
55    * INCOMPLETE - US 62: It is important that stem()+extension()==filename()
56    * INCOMPLETE - US 63: lexically_normal() inconsistently treats trailing "/" but not "/.." as directory
57    * INCOMPLETE - US 73, CA 2: root-name is effectively implementation defined
58    * INCOMPLETE - US 74, CA 3: The term “pathname” is ambiguous in some contexts
59    * INCOMPLETE - US 75, CA 4: Extra flag in path constructors is needed
60    * INCOMPLETE - US 76, CA 5: root-name definition is over-specified.
61    * INCOMPLETE - US 77, CA 6: operator/ and other appends not useful if arg has root-name
62    * INCOMPLETE - US 78, CA 7: Member absolute() in 27.10.4.1 is overspecified for non-POSIX-like O/S
63    * INCOMPLETE - US 79, CA 8: Some operation functions are overspecified for implementation-defined file types
64    * INCOMPLETE - US 185: Fold error_code and non-error_code signatures into one signature
65    * INCOMPLETE - FI 14: directory_entry comparisons are members
66    * INCOMPLETE - Late 36: permissions() error_code overload should be noexcept
67    * INCOMPLETE - Late 37: permissions() actions should be separate parameter
68    * INCOMPLETE - Late 42: resize_file() Postcondition missing argument
69
70Misc Tasks
71==========
72* Find all sequences of >2 underscores and eradicate them.
73* run clang-tidy on libc++
74* Document the "conditionally-supported" bits of libc++
75* Look at basic_string's move assignment operator, re LWG 2063 and POCMA
76* Put a static_assert in std::allocator to deny const/volatile types (LWG 2447)
77