PR c++/56493
	* convert.c (convert_to_real, convert_to_expr, convert_to_complex):
	Handle COMPOUND_EXPR.

	* c-c++-common/pr56493.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_8-branch@218347 138bc75d-0d04-0410-961f-82ee72b054a4