[Bug c++/57620] New: Phantom terminator confuses raw string literal parsing.

[crowl at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57620

            Bug ID: 57620
           Summary: Phantom terminator confuses raw string literal
                    parsing.
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: crowl at google dot com

The first example of C++11 section 2.14.5 paragraph 5 confuses the scanner.

$ cat test.cc
const char *phantom_terminator = R"a(
)\
a"
)a";
$ xg++ -std=c++11 -g -O2 -c test.cc
test.cc:4:3: warning: missing terminating " character [enabled by default]
 )a";
   ^
test.cc:4:1: error: missing terminating " character
 )a";
 ^
test.cc:4:1: error: expected ',' or ';' before ')' token