This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 117b. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
2025-08-11
518. Trailing comma following enumerator-listSection: 9.8.1 [dcl.enum] Status: CD1 Submitter: Charles Bryant Date: 10 May 2005[Voted into WP at April, 2006 meeting.]
The C language (since C99), and some C++ compilers, accept:
enum { FOO, };
as syntactically valid. It would be useful
for machine generated code
for minimising changes when editing
to allow a distinction between the final item being intended as an ordinary item or as a limit:
enum { red, green, blue, num_colours }; // note no comma
enum { fred, jim, sheila, }; // last is not special
This proposed change is to permit a trailing comma in enum by adding:
enum identifieropt { enumerator-list , }
as an alternative definition for the enum-specifier nonterminal in 9.8.1 [dcl.enum] paragraph 1.
Proposed resolution (October, 2005):
Change the grammar in 9.8.1 [dcl.enum] paragraph 1 as indicated:
enum-specifier:enum identifieropt { enumerator-listopt }
enum identifieropt { enumerator-list , }
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4