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From: "joerg.richter@pdv-fs.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug preprocessor/48248] New: Wrong error message location when compiling preprocessed code
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48248

           Summary: Wrong error message location when compiling
                    preprocessed code
           Product: gcc
           Version: 4.5.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: preprocessor
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: joerg.richter@pdv-fs.de


$ cat > foobar.h << EOF
enum Foo
{
  BAR
};
#define BAR(x) 
#define BARBAR BAR
EOF

$ cat > main.cc << EOF
#include "foobar.h"



void func()
{
  (void)BARBAR;
  aaa;
}
EOF

$ g++ -c main.cc
main.cc: In function 'void func()':
main.cc:8:3: error: 'aaa' was not declared in this scope

$ g++ -E main.cc > main.ii
$ g++ -c main.ii
foobar.h: In function 'void func()':
foobar.h:8:3: error: 'aaa' was not declared in this scope

Please notice the wrong filename when compiling the preprocessed source.

GCC 4.4 doesn't have this problem.