cp/
	PR c++/8057
	* cvt.c (convert_to_void): Don't warn about unused values when
	processing a template declaration.
testsuite/
	PR c++/8057
	* g++.dg/warn/noeffect7.C: New test.
	* g++.dg/warn/noeffect2.C: Instantiate templates.
	* g++.dg/warn/noeffect4.C: Instantiate template.  Add new error
	and warning.

From-SVN: r105273