[Bug preprocessor/55971] New: Preprocessor macros with C++11 raw string literals fail to compile

["nachms+gcc at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55971

             Bug #: 55971
           Summary: Preprocessor macros with C++11 raw string literals
                    fail to compile
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: preprocessor
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: nachms+gcc@gmail.com


It does not seem possible to create a macro which contains a C++ raw string
literal, when it should be.

Example:
-----------------
#include <iostream>

#define CREATE_CLIENTS R"(CREATE TABLE "clients"(
  "clientId" INTEGER PRIMARY KEY AUTOINCREMENT,
  "clientName" VARCHAR(64) UNIQUE
))"

int main()
{
  std::cout << CREATE_CLIENTS << std::endl;
  return 0;
}
-----------------
g++ -W -Wall -o test test.cpp -std=c++11
test.cpp:3:24: error: unterminated raw string
test.cpp:6:3: warning: missing terminating " character [enabled by default]
test.cpp:6:1: error: missing terminating " character
test.cpp:10:3: error: stray ‘R’ in program
test.cpp:4:3: error: expected unqualified-id before string constant

On the other hand, clang seems to be able to handle it:
clang++ -W -Wall -o test test.cpp -std=c++11
./test
CREATE TABLE "clients"(
  "clientId" INTEGER PRIMARY KEY AUTOINCREMENT,
  "clientName" VARCHAR(64) UNIQUE
)