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Date: Tue, 02 Mar 2010 22:05:00 -0000
From: Michael Morrell <morrell@alumni.ucsd.edu>
Reply-To: morrell@alumni.ucsd.edu
Subject: Re: temp preprocessed filename
To: Ian Lance Taylor <iant@google.com>
Cc: gcc-help@gcc.gnu.org
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Here's a smaller testcase:

  typedef int ptrdiff_t;

  namespace std {
    using ::ptrdiff_t;
  }

  void foo() {}

when you run:

  g++ -g -E foo.cpp > foo.ii; g++ -g -c foo.ii

the foo.o produced contains a reference to foo.ii in .debug_line.

  Michael