[Bug c++/17964] New: cpp error messages contain wrong line in C++

[mrs at apple dot com]

The below testcase recently broke for C++.

char *p = "\q"; /* { dg-error "unknown escape" } */
int i;

The problem is the line numbers for cpp_error 
come out as the last line number in the source file.
we currently see:

t.cc:2:1: warning: unknown escape sequence '\q'

instead of:

t.cc:1:11: warning: unknown escape sequence '\q'

(which is what we see in C).

-- 
           Summary: cpp error messages contain wrong line in C++
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P1
         Component: c++
        AssignedTo: zack at codesourcery dot com
        ReportedBy: mrs at apple dot com
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: powerpc-apple-darwin7.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17964