re PR c++/51313 ([C++0x] ICE: tree check: expected class 'constant', have 'unary' (nop_expr) in null_ptr_cst_p, at cp/call.c:556)

/cp
2011-12-03  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51313
	* call.c (null_ptr_cst_p): STRIP_NOPS in c++11 mode too.

/testsuite
2011-12-03  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51313
	* g++.dg/cpp0x/pr51313.C: New.

From-SVN: r181980