re PR c++/84705 (internal compiler error: in add_stmt, at cp/semantics.c:390)

/cp
2018-10-17  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84705
	* init.c (build_cplus_new): Avoid duplicate diagnostic about
	incomplete type, early return error_mark_node if the second
	argument is error_mark_node.

/testsuite
2018-10-17  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84705
	* g++.dg/cpp0x/pr84705.C: New.

From-SVN: r265233

gcc/cp/ChangeLog

+2018-10-17  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/84705
+	* init.c (build_cplus_new): Avoid duplicate diagnostic about
+	incomplete type, early return error_mark_node if the second
+	argument is error_mark_node.
+
 2018-10-12  Nathan Sidwell  <nathan@acm.org>
 
 	* parser.h (struct cp_parser): Drop implicit_extern_c.

gcc/testsuite/ChangeLog

+2018-10-17  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/84705
+	* g++.dg/cpp0x/pr84705.C: New.
+
 2018-10-17  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/56386

gcc/testsuite/g++.dg/cpp0x/pr84705.C

+// { dg-do compile { target c++11 } }
+// { dg-options "" }
+
+int a[]{a};  // { dg-error "invalid conversion" }
+
+template<int>
+struct b {
+  __attribute__((c([] {
+    struct {
+      int a = static_cast<struct d>(a);  // { dg-error "invalid use of incomplete type" }
+    } e;
+  })));
+};