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
912. Character literals and universal-character-namesSection: 5.13.3 [lex.ccon] Status: CD3 Submitter: Alisdair Meredith Date: 7 June, 2009[Moved to DR at the October, 2012 meeting.]
According to 5.13.3 [lex.ccon] paragraph 1,
A character literal that does not begin with u, U, or L is an ordinary character literal, also referred to as a narrow-character literal. An ordinary character literal that contains a single c-char has type char, with value equal to the numerical value of the encoding of the c-char in the execution character set.
However, the definition of c-char includes as one possibility a universal-character-name. The value of a universal-character-name cannot, in general, be represented as a char, so this specification is impossible to satisfy.
(See also issue 411 for related questions.)
Additional note (February, 2012):
See the discussion in issue 1422 for a possible interpretation of the existing text.
Proposed resolution (February, 2012):
Change 5.13.3 [lex.ccon] paragraph 1 as follows:
...A character literal that does not begin with u, U, or L is an ordinary character literal, also referred to as a narrow-character literal. An ordinary character literal that contains a single c-char representable in the execution character set has type char, with value equal to the numerical value of the encoding of the c-char in the execution character set. An ordinary character literal that contains more than one c-char is a multicharacter literal. A multicharacter literal , or an ordinary character literal containing a single c-char not representable in the execution character set, is conditionally-supported, has type int , and has an implementation-defined value.
This resolution also resolves issue 1024.
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