[Bug c++/12242] g++ should warn about out-of-range int->enum conversions

["bangerth at dealii dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #15 from bangerth at dealii dot org  2008-08-07 05:41 -------
Hi Manu,
just saw your patch for PR 12242 and have a comment: I believe the warning
message would be much better if it said *why* the result is unspecified (if the
expression being cast is a bit more complicated then it may not be immediately
clear to the casual observer that the reason is that the value is out of range;
one could also think that for whatever reason conversions between enums are
unspecified -- which of course isn't the true reason).

So I think a better wording would be
+       warning (OPT_Wconversion, 
+                "the result of %<static_cast<%T>(%E)%> is unspecified because
the " 
+               "value is out of range for type %T",
+                type, expr, type);

Best
  Wolfgang


-- 

bangerth at dealii dot org changed:

           What    |Removed                     |Added
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                 CC|                            |bangerth at dealii dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12242