[Bug c/57653] [4.8/4.9 Regression] filename information discarded when using -imacros

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57653

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2
                 CC|                            |rguenth at gcc dot gnu.org
   Target Milestone|---                         |4.8.5
            Summary|filename information        |[4.8/4.9 Regression]
                   |discarded when using        |filename information
                   |-imacros                    |discarded when using
                   |                            |-imacros

--- Comment #23 from Richard Biener <rguenth at gcc dot gnu.org> ---
If 4.7.3 works this is a regression.  Can we get the patch backported to
release branches please?