PR c++/92134 - constinit malfunction in static data member.

I wasn't properly setting LOOKUP_CONSTINIT in grokfield and so we didn't
detect a non-const initializer.

	* decl2.c (grokfield): Set LOOKUP_CONSTINIT.

	* g++.dg/cpp2a/constinit14.C: New test.

From-SVN: r277636

gcc/cp/ChangeLog

+2019-10-30  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/92134 - constinit malfunction in static data member.
+	* decl2.c (grokfield): Set LOOKUP_CONSTINIT.
+
 2019-10-30  Jakub Jelinek  <jakub@redhat.com>
 
 	* cp-tree.h (omp_declare_variant_finalize, build_local_temp): Declare.

gcc/cp/decl2.c

@@ -990,6 +990,9 @@ grokfield (const cp_declarator *declarator,
   else
     flags = LOOKUP_IMPLICIT;
 
+  if (decl_spec_seq_has_spec_p (declspecs, ds_constinit))
+    flags |= LOOKUP_CONSTINIT;
+
   switch (TREE_CODE (value))
     {
     case VAR_DECL:

gcc/testsuite/ChangeLog

+2019-10-30  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/92134 - constinit malfunction in static data member.
+	* g++.dg/cpp2a/constinit14.C: New test.
+
 2019-10-30  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
 
 	* gcc.target/msp430/mlarge-use-430-insn.c: New test.

gcc/testsuite/g++.dg/cpp2a/constinit14.C

+// PR c++/92134 - constinit malfunction in static data member.
+// { dg-do compile { target c++2a } }
+
+struct Value {
+  Value() : v{new int{42}} {}
+  int* v;
+};
+
+struct S {
+  static constinit inline Value v{}; // { dg-error "variable .S::v. does not have a constant initializer|call to non-.constexpr. function" }
+};
+
+int main() { return *S::v.v; }