[Bug middle-end/48087] [4.5/4.6/4.7 Regression] -Wall -Werror adds warnings over and above those generated by -Wall

[manu at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48087

--- Comment #10 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2011-10-18 
20:22:52 UTC ---
The gimple generated with -Wreturn-type and with -Werror=return-type is even
different. At least at revision 164549.

*** pr48087.cc.004t.gimple-Wreturn-type 2011-10-18 22:17:16.000000000 +0200
--- pr48087.cc.004t.gimple-Werror-return-type   2011-10-18 22:17:56.000000000
+0200
***************
*** 91,127 ****
        [/home/manuel/pr48087.cc : 28:28] # USE = anything 
        # CLB = anything 
        _ZN4BetaC1EvD.2093 ([/home/manuel/pr48087.cc : 28] &D.2139);
!       [/home/manuel/pr48087.cc : 28:28] try
!         {
!           [/home/manuel/pr48087.cc : 28:28] # USE = anything 
!           # CLB = anything 
!           b2D.2138 = _ZN4Beta5valueEvD.2091 ([/home/manuel/pr48087.cc : 28]
&D.2139);
!         }
!       finally
!         {
!           [/home/manuel/pr48087.cc : 28:20] # USE = anything 
!           # CLB = anything 
!           __comp_dtor D.2097 ([/home/manuel/pr48087.cc : 28] &D.2139);
!         }
        [/home/manuel/pr48087.cc : 29:24] # USE = anything 
        # CLB = anything 
        _ZN4BetaC1EvD.2093 ([/home/manuel/pr48087.cc : 29] &D.2140);
!       [/home/manuel/pr48087.cc : 29:26] try
!         {
!           [/home/manuel/pr48087.cc : 29:24] # USE = anything 
!           # CLB = anything 
!           D.2168 = _ZN4Beta5valueEvD.2091 ([/home/manuel/pr48087.cc : 29]
&D.2140);
!           [/home/manuel/pr48087.cc : 29:25] D.2169 = (intD.2) D.2168;
!           [/home/manuel/pr48087.cc : 29:26] # USE = anything 
!           # CLB = anything 
!           _Z5GammabD.2109 (D.2169);
!         }
!       finally
!         {
!           [/home/manuel/pr48087.cc : 29:16] # USE = anything 
!           # CLB = anything 
!           __comp_dtor D.2097 ([/home/manuel/pr48087.cc : 29] &D.2140);
!         }
      }
    }
  }
--- 91,109 ----
        [/home/manuel/pr48087.cc : 28:28] # USE = anything 
        # CLB = anything 
        _ZN4BetaC1EvD.2093 ([/home/manuel/pr48087.cc : 28] &D.2139);
!       [/home/manuel/pr48087.cc : 28:28] # USE = anything 
!       # CLB = anything 
!       b2D.2138 = _ZN4Beta5valueEvD.2091 ([/home/manuel/pr48087.cc : 28]
&D.2139);
        [/home/manuel/pr48087.cc : 29:24] # USE = anything 
        # CLB = anything 
        _ZN4BetaC1EvD.2093 ([/home/manuel/pr48087.cc : 29] &D.2140);
!       [/home/manuel/pr48087.cc : 29:24] # USE = anything 
!       # CLB = anything 
!       D.2168 = _ZN4Beta5valueEvD.2091 ([/home/manuel/pr48087.cc : 29]
&D.2140);
!       [/home/manuel/pr48087.cc : 29:25] D.2169 = (intD.2) D.2168;
!       [/home/manuel/pr48087.cc : 29:26] # USE = anything 
!       # CLB = anything 
!       _Z5GammabD.2109 (D.2169);
      }
    }
  }
***************
*** 130,136 ****
  bool DeltaOne(bool) (boolD.2002 bD.2111)
  [/home/manuel/pr48087.cc : 21:12] {
    struct BetaD.2084 D.2134;
!   intD.2 D.2173;
    struct AlphaD.2063 sD.2114;
    boolD.2002 b2D.2124;

--- 112,118 ----
  bool DeltaOne(bool) (boolD.2002 bD.2111)
  [/home/manuel/pr48087.cc : 21:12] {
    struct BetaD.2084 D.2134;
!   intD.2 D.2171;
    struct AlphaD.2063 sD.2114;
    boolD.2002 b2D.2124;

***************
*** 142,163 ****
        [/home/manuel/pr48087.cc : 20:26] # USE = anything 
        # CLB = anything 
        _ZN4BetaC1EvD.2093 ([/home/manuel/pr48087.cc : 20] &D.2134);
!       [/home/manuel/pr48087.cc : 20:26] try
!         {
!           [/home/manuel/pr48087.cc : 20:26] # USE = anything 
!           # CLB = anything 
!           b2D.2124 = _ZN4Beta5valueEvD.2091 ([/home/manuel/pr48087.cc : 20]
&D.2134);
!         }
!       finally
!         {
!           [/home/manuel/pr48087.cc : 20:18] # USE = anything 
!           # CLB = anything 
!           __comp_dtor D.2097 ([/home/manuel/pr48087.cc : 20] &D.2134);
!         }
!       [/home/manuel/pr48087.cc : 21:11] D.2173 = (intD.2) b2D.2124;
        [/home/manuel/pr48087.cc : 21:12] # USE = anything 
        # CLB = anything 
!       _Z5GammabD.2109 (D.2173);
      }
    finally
      {
--- 124,136 ----
        [/home/manuel/pr48087.cc : 20:26] # USE = anything 
        # CLB = anything 
        _ZN4BetaC1EvD.2093 ([/home/manuel/pr48087.cc : 20] &D.2134);
!       [/home/manuel/pr48087.cc : 20:26] # USE = anything 
!       # CLB = anything 
!       b2D.2124 = _ZN4Beta5valueEvD.2091 ([/home/manuel/pr48087.cc : 20]
&D.2134);
!       [/home/manuel/pr48087.cc : 21:11] D.2171 = (intD.2) b2D.2124;
        [/home/manuel/pr48087.cc : 21:12] # USE = anything 
        # CLB = anything 
!       _Z5GammabD.2109 (D.2171);
      }
    finally
      {