PR c++/21089
	* call.c (convert_like_real): Use decl_constant_value, not
	integral_constant_value.
	* init.c (constant_value_1): New function.
	(integral_constant_value): Use it.
	(decl_constant_value): Likewise.
	* typeck.c (decay_conversion): Use decl_constant_value, not
	integral_constant_value.
	PR c++/21089
	* g++.dg/init/float1.C: New test.

From-SVN: r105256