[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

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |manu at gcc dot gnu.org

--- Comment #7 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2011-10-18 15:42:42 UTC ---
> Is there a simple explanation for why the problem didn't show up in 4.4.x?

The question is why control does not reach the warning() when -Werror is not
given. Are the warnings appropriate or bogus?

If the warnings are bogus (because they refer to the same function), then I
guess that the code path for warnings_as_error does not set TREE_NO_WARNING()
at some point.