On Sat, Mar 1, 2014 at 9:04 PM, phi gcc <phi.gcc@xxxxxxxxx> wrote: > Hi All, > > I narrowed down a problem that break my builds... > > C4N1$ cat c.c > #define L "cd" > s="ab" L "ef"; > s="ab"L "ef"; > s="ab" L"ef"; > s="ab"L"ef"; String prefixed with L is a wide string literal, in your last two examples it's L"ef" see n1570 section 6.4.5 3rd point: A character string literal is a sequence of zero or more multibyte characters enclosed in double-quotes, as in "xyz". A UTF -8 string literal is the same, except prefixed by u8. A wide string literal is the same, except prefixed by the letter L, u, or U. > > C4N1$ cc -E c.c > # 1 "c.c" > # 1 "<command-line>" > # 1 "/usr/include/stdc-predef.h" 1 3 4 > # 1 "<command-line>" 2 > # 1 "c.c" > > s="ab" "cd" "ef"; > s="ab""cd" "ef"; > s="ab" L"ef"; > s="ab"L"ef"; > > C4N1$ > > Why the last 2 L are not expansed ? other compilers (non linux) do > expand all of them. > > Thanx on advance > Cheers, > Phi
