[Bug c++/36912] [4.2/4.3/4.4 regression] ICE with "-frounding-math -g"

[jakub at gcc dot gnu dot org]

------- Comment #3 from jakub at gcc dot gnu dot org  2008-08-14 08:03 -------
I think the primary question is, do we expect -frounding-math to force this to
be evaluated at runtime or not?
If it should be evaluated at runtime, then I'd say initializer_constant_valid_p
should reject PLUS_EXPR and MINUS_EXPR with FLOAT_TYPE_P (endtype) (and maybe
also narrowing casts like (float) double) if flag_rounding_math.  If it
shouldn't be evaluated at runtime, we'd need to figure out where to call
(perhaps recursively) the fold*initializer calls - that's something only the C
FE uses, but not C++.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36912