re PR c++/46065 (ICE: tree check: expected tree that contains 'decl minimal' structure, have 'tree_list' in poplevel_named_label_1, at cp/decl.c:477)

gcc/cp/
	PR c++/46065
	* decl.c (poplevel_named_label_1): Use TREE_CHAIN if necessary.

gcc/testsuite/
	PR c++/46065
	* g++.dg/pr46065.C: New test.

From-SVN: r166558