This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 115b. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
2024-08-20
Given the existing implementation divergence, it should be clarified that __LINE__ counts physical source lines, not logical ones.
Proposed resolution (approved by CWG 2024-08-16):
Change in 15.7 [cpp.line] paragraph 2 as follows:
The line number of the current source line is the line number of the current physical source line, i.e. it is one greater than the number of new-line characters read or introduced in translation phase 1 (5.2 [lex.phases]) while processing the source file to the current token.