------- Comment #8 from burnus at gcc dot gnu dot org 2007-11-26 22:54 ------- I just committed Steve's patch. Now gfortran uses -fno-backslash by default.
Now we only need to improve the warning: For C gcc warns for: char c[] = "\w"; a.c:3:14: warning: unknown escape sequence '\w' gfortran should do likewise in match.c's gfc_match_special_char. Actually, we do not fully support all C escape sequences (see "5.2.2 Character display semantics", "6.4.4.4 Character constants" and "6.4.3 Universal character names"); missing are: - trigraphs (I don't think anyone misses them) - \" and \' (use "" or '' instead) - \? (use ?) - \o, \oo \ooo (o = octal digit) - except of \0 - \xh, \xhh (h = hexadecimal digit) - \uhhhh, \Uhhhhhhhh (h = hexadecimal digit) I don't know whether we really need to implement them, but at least we should document what we have. A proper documentation would be something like Intel's http://www.intel.com/software/products/compilers/docs/flin/main_for/index.htm -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34203
