diff --git a/gcc/fortran/class.cc b/gcc/fortran/class.cc
index ce31a93abcd..abe89630be3 100644
--- a/gcc/fortran/class.cc
+++ b/gcc/fortran/class.cc
@@ -815,6 +815,56 @@ gfc_build_class_symbol (gfc_typespec *ts, symbol_attribute *attr,
 }
 
 
+/* Change class, using gfc_build_class_symbol. This is needed for associate
+   names, when rank changes or a derived type is produced by resolution.  */
+
+void
+gfc_change_class (gfc_typespec *ts, symbol_attribute *sym_attr,
+		  gfc_array_spec *sym_as, int rank, int corank)
+{
+  symbol_attribute attr;
+  gfc_component *c;
+  gfc_array_spec *as = NULL;
+  gfc_symbol *der = ts->u.derived;
+
+  ts->type = BT_CLASS;
+  attr = *sym_attr;
+  attr.class_ok = 0;
+  attr.associate_var = 1;
+  attr.class_pointer = 1;
+  attr.allocatable = 0;
+  attr.pointer = 1;
+  attr.dimension = rank ? 1 : 0;
+  if (rank)
+    {
+      if (sym_as)
+	as = gfc_copy_array_spec (sym_as);
+      else
+	{
+	  as = gfc_get_array_spec ();
+	  as->rank = rank;
+	  as->type = AS_DEFERRED;
+	  as->corank = corank;
+	}
+    }
+  if (as && as->corank != 0)
+    attr.codimension = 1;
+
+  if (!gfc_build_class_symbol (ts, &attr, &as))
+    gcc_unreachable ();
+
+  gfc_set_sym_referenced (ts->u.derived);
+
+  /* Make sure the _vptr is set.  */
+  c = gfc_find_component (ts->u.derived, "_vptr", true, true, NULL);
+  if (c->ts.u.derived == NULL)
+    c->ts.u.derived = gfc_find_derived_vtab (der);
+  /* _vptr now has the _vtab in it, change it to the _vtype.  */
+  if (c->ts.u.derived->attr.vtab)
+    c->ts.u.derived = c->ts.u.derived->ts.u.derived;
+}
+
+
 /* Add a procedure pointer component to the vtype
    to represent a specific type-bound procedure.  */
 
diff --git a/gcc/fortran/dump-parse-tree.cc b/gcc/fortran/dump-parse-tree.cc
index 7b154eb3ca7..99b577c91c4 100644
--- a/gcc/fortran/dump-parse-tree.cc
+++ b/gcc/fortran/dump-parse-tree.cc
@@ -2692,11 +2692,20 @@ show_code_node (int level, gfc_code *c)
 
     case EXEC_BLOCK:
       {
-	const char* blocktype;
+	const char *blocktype, *sname = NULL;
 	gfc_namespace *saved_ns;
 	gfc_association_list *alist;
 
-	if (c->ext.block.assoc)
+	if (c->ext.block.ns && c->ext.block.ns->code
+	    && c->ext.block.ns->code->op == EXEC_SELECT_TYPE)
+	  {
+	    gfc_expr *fcn = c->ext.block.ns->code->expr1;
+	    blocktype = "SELECT TYPE";
+	    /* expr1 is _loc(assoc_name->vptr)  */
+	    if (fcn && fcn->expr_type == EXPR_FUNCTION)
+	      sname = fcn->value.function.actual->expr->symtree->n.sym->name;
+	  }
+	else if (c->ext.block.assoc)
 	  blocktype = "ASSOCIATE";
 	else
 	  blocktype = "BLOCK";
@@ -2704,7 +2713,7 @@ show_code_node (int level, gfc_code *c)
 	fprintf (dumpfile, "%s ", blocktype);
 	for (alist = c->ext.block.assoc; alist; alist = alist->next)
 	  {
-	    fprintf (dumpfile, " %s = ", alist->name);
+	    fprintf (dumpfile, " %s = ", sname ? sname : alist->name);
 	    show_expr (alist->target);
 	  }
 
@@ -2735,7 +2744,7 @@ show_code_node (int level, gfc_code *c)
       if (c->op == EXEC_SELECT_RANK)
 	fputs ("SELECT RANK ", dumpfile);
       else if (c->op == EXEC_SELECT_TYPE)
-	fputs ("SELECT TYPE ", dumpfile);
+	fputs ("SELECT CASE ", dumpfile); // Preceded by SELECT TYPE construct
       else
 	fputs ("SELECT CASE ", dumpfile);
       show_expr (c->expr1);
diff --git a/gcc/fortran/gfortran.h b/gcc/fortran/gfortran.h
index ebba2336e12..70b9faad074 100644
--- a/gcc/fortran/gfortran.h
+++ b/gcc/fortran/gfortran.h
@@ -2963,6 +2963,11 @@ typedef struct gfc_association_list
   locus where;
 
   gfc_expr *target;
+
+  /* Used for inferring the derived type of an associate name, whose selector
+     is a sibling derived type function that has not yet been parsed.  */
+  gfc_symbol *derived_types;
+  unsigned inferred_type:1;
 }
 gfc_association_list;
 #define gfc_get_association_list() XCNEW (gfc_association_list)
@@ -3529,6 +3534,7 @@ bool gfc_add_component (gfc_symbol *, const char *, gfc_component **);
 gfc_symbol *gfc_use_derived (gfc_symbol *);
 gfc_component *gfc_find_component (gfc_symbol *, const char *, bool, bool,
                                    gfc_ref **);
+int gfc_find_derived_types (gfc_symbol *, gfc_namespace *, const char *);
 
 gfc_st_label *gfc_get_st_label (int);
 void gfc_free_st_label (gfc_st_label *);
@@ -3795,6 +3801,7 @@ void gfc_free_association_list (gfc_association_list *);
 void gfc_expression_rank (gfc_expr *);
 bool gfc_op_rank_conformable (gfc_expr *, gfc_expr *);
 bool gfc_resolve_ref (gfc_expr *);
+void gfc_fixup_inferred_type_refs (gfc_expr *);
 bool gfc_resolve_expr (gfc_expr *);
 void gfc_resolve (gfc_namespace *);
 void gfc_resolve_code (gfc_code *, gfc_namespace *);
@@ -3988,6 +3995,8 @@ unsigned int gfc_hash_value (gfc_symbol *);
 gfc_expr *gfc_get_len_component (gfc_expr *e, int);
 bool gfc_build_class_symbol (gfc_typespec *, symbol_attribute *,
 			     gfc_array_spec **);
+void gfc_change_class (gfc_typespec *, symbol_attribute *,
+		       gfc_array_spec *, int, int);
 gfc_symbol *gfc_find_derived_vtab (gfc_symbol *);
 gfc_symbol *gfc_find_vtab (gfc_typespec *);
 gfc_symtree* gfc_find_typebound_proc (gfc_symbol*, bool*,
@@ -4018,6 +4027,10 @@ bool gfc_may_be_finalized (gfc_typespec);
 #define IS_PROC_POINTER(sym) \
 	(sym->ts.type == BT_CLASS && sym->attr.class_ok && CLASS_DATA (sym) \
 	 ? CLASS_DATA (sym)->attr.proc_pointer : sym->attr.proc_pointer)
+#define IS_INFERRED_TYPE(expr) \
+	(expr && expr->expr_type == EXPR_VARIABLE \
+	 && expr->symtree->n.sym->assoc \
+	 && expr->symtree->n.sym->assoc->inferred_type)
 
 /* frontend-passes.cc */
 
diff --git a/gcc/fortran/match.cc b/gcc/fortran/match.cc
index eee569dac91..64f61c50c66 100644
--- a/gcc/fortran/match.cc
+++ b/gcc/fortran/match.cc
@@ -1963,6 +1963,20 @@ gfc_match_associate (void)
 	  goto assocListError;
 	}
 
+      /* If the selector expression is enclosed in parentheses and the
+	 expression is not a variable, throw the parentheses away.  */
+      while (newAssoc->target->expr_type == EXPR_OP
+	     && newAssoc->target->value.op.op == INTRINSIC_PARENTHESES)
+	{
+	  if (newAssoc->target->value.op.op1->expr_type == EXPR_VARIABLE)
+	    break;
+	  else
+	    {
+	      gfc_expr *e = gfc_copy_expr (newAssoc->target->value.op.op1);
+	      gfc_replace_expr (newAssoc->target, e);
+	    }
+	}
+
       /* The `variable' field is left blank for now; because the target is not
 	 yet resolved, we can't use gfc_has_vector_subscript to determine it
 	 for now.  This is set during resolution.  */
@@ -6322,7 +6336,8 @@ gfc_match_select (void)
 /* Transfer the selector typespec to the associate name.  */
 
 static void
-copy_ts_from_selector_to_associate (gfc_expr *associate, gfc_expr *selector)
+copy_ts_from_selector_to_associate (gfc_expr *associate, gfc_expr *selector,
+				    bool select_type = false)
 {
   gfc_ref *ref;
   gfc_symbol *assoc_sym;
@@ -6405,12 +6420,30 @@ copy_ts_from_selector_to_associate (gfc_expr *associate, gfc_expr *selector)
     assoc_sym->as = NULL;
 
 build_class_sym:
-  if (selector->ts.type == BT_CLASS)
+  /* Deal with the very specific case of a SELECT_TYPE selector being an
+     associate_name whose type has been identified by component references.
+     It must be assumed that it will be identified as a CLASS expression,
+     so convert it now.  */
+  if (select_type
+      && IS_INFERRED_TYPE (selector)
+      && selector->ts.type == BT_DERIVED)
+    {
+      gfc_find_derived_vtab (selector->ts.u.derived);
+      /* The correct class container has to be available.  */
+      assoc_sym->ts.u.derived = selector->ts.u.derived;
+      assoc_sym->ts.type = BT_CLASS;
+      assoc_sym->attr.pointer = 1;
+      if (!selector->ts.u.derived->attr.is_class)
+	gfc_build_class_symbol (&assoc_sym->ts, &assoc_sym->attr, &assoc_sym->as);
+      associate->ts = assoc_sym->ts;
+    }
+  else if (selector->ts.type == BT_CLASS)
     {
       /* The correct class container has to be available.  */
       assoc_sym->ts.type = BT_CLASS;
       assoc_sym->ts.u.derived = CLASS_DATA (selector)
-	? CLASS_DATA (selector)->ts.u.derived : selector->ts.u.derived;
+				? CLASS_DATA (selector)->ts.u.derived
+				: selector->ts.u.derived;
       assoc_sym->attr.pointer = 1;
       gfc_build_class_symbol (&assoc_sym->ts, &assoc_sym->attr, &assoc_sym->as);
     }
@@ -6438,7 +6471,7 @@ build_associate_name (const char *name, gfc_expr **e1, gfc_expr **e2)
   if (expr2->ts.type == BT_UNKNOWN)
     sym->attr.untyped = 1;
   else
-    copy_ts_from_selector_to_associate (expr1, expr2);
+    copy_ts_from_selector_to_associate (expr1, expr2, true);
 
   sym->attr.flavor = FL_VARIABLE;
   sym->attr.referenced = 1;
diff --git a/gcc/fortran/parse.cc b/gcc/fortran/parse.cc
index a4fda6e5eb6..a2bf328f681 100644
--- a/gcc/fortran/parse.cc
+++ b/gcc/fortran/parse.cc
@@ -5150,6 +5150,17 @@ parse_associate (void)
       sym->declared_at = a->where;
       gfc_set_sym_referenced (sym);
 
+      /* If the selector is a inferred type then the associate_name had better
+	 be as well. Use array references, if present, to identify it as an
+	 array.  */
+      if (IS_INFERRED_TYPE (a->target))
+	{
+	  sym->assoc->inferred_type = 1;
+	  for (gfc_ref *r = a->target->ref; r; r = r->next)
+	    if (r->type == REF_ARRAY)
+	      sym->attr.dimension = 1;
+	}
+
       /* Initialize the typespec.  It is not available in all cases,
 	 however, as it may only be set on the target during resolution.
 	 Still, sometimes it helps to have it right now -- especially
@@ -5176,21 +5187,41 @@ parse_associate (void)
 	       && sym->ts.u.cl->length->expr_type == EXPR_CONSTANT))
 	sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
 
+      /* If the function has been parsed, go straight to the result to
+	 obtain the expression rank.  */
+      if (target->expr_type == EXPR_FUNCTION
+	  && target->symtree
+	  && target->symtree->n.sym)
+	{
+	  tsym = target->symtree->n.sym;
+	  if (!tsym->result)
+	    tsym->result = tsym;
+	  sym->ts = tsym->result->ts;
+	  if (sym->ts.type == BT_CLASS)
+	    {
+	      if (CLASS_DATA (sym)->as)
+		target->rank = CLASS_DATA (sym)->as->rank;
+	      sym->attr.class_ok = 1;
+	    }
+	  else
+	    target->rank = tsym->result->as ? tsym->result->as->rank : 0;
+	}
+
       /* Check if the target expression is array valued. This cannot be done
 	 by calling gfc_resolve_expr because the context is unavailable.
 	 However, the references can be resolved and the rank of the target
 	 expression set.  */
-      if (target->ref && gfc_resolve_ref (target)
+      if (!sym->assoc->inferred_type
+	  && target->ref && gfc_resolve_ref (target)
 	  && target->expr_type != EXPR_ARRAY
 	  && target->expr_type != EXPR_COMPCALL)
 	gfc_expression_rank (target);
 
       /* Determine whether or not function expressions with unknown type are
 	 structure constructors. If so, the function result can be converted
-	 to be a derived type.
-	 TODO: Deal with references to sibling functions that have not yet been
-	 parsed (PRs 89645 and 99065).  */
-      if (target->expr_type == EXPR_FUNCTION && target->ts.type == BT_UNKNOWN)
+	 to be a derived type.  */
+      if (target->expr_type == EXPR_FUNCTION
+	  && target->ts.type == BT_UNKNOWN)
 	{
 	  gfc_symbol *derived;
 	  /* The derived type has a leading uppercase character.  */
@@ -5200,16 +5231,7 @@ parse_associate (void)
 	    {
 	      sym->ts.type = BT_DERIVED;
 	      sym->ts.u.derived = derived;
-	    }
-	  else if (target->symtree && (tsym = target->symtree->n.sym))
-	    {
-	      sym->ts = tsym->result ? tsym->result->ts : tsym->ts;
-	      if (sym->ts.type == BT_CLASS)
-		{
-		  if (CLASS_DATA (sym)->as)
-		    target->rank = CLASS_DATA (sym)->as->rank;
-		  sym->attr.class_ok = 1;
-		}
+	      sym->assoc->inferred_type = 0;
 	    }
 	}
 
diff --git a/gcc/fortran/primary.cc b/gcc/fortran/primary.cc
index 12e7bf3c873..c64ebf67c70 100644
--- a/gcc/fortran/primary.cc
+++ b/gcc/fortran/primary.cc
@@ -2057,6 +2057,7 @@ gfc_match_varspec (gfc_expr *primary, int equiv_flag, bool sub_flag,
   bool unknown;
   bool inquiry;
   bool intrinsic;
+  bool inferred_type;
   locus old_loc;
   char sep;
 
@@ -2087,6 +2088,18 @@ gfc_match_varspec (gfc_expr *primary, int equiv_flag, bool sub_flag,
   if (sym->assoc && sym->assoc->target)
     tgt_expr = sym->assoc->target;
 
+  inferred_type = IS_INFERRED_TYPE (primary);
+
+  /* SELECT TYPE and SELECT RANK temporaries within an ASSOCIATE block, whose
+     selector has not been parsed, can generate errors with array and component
+     refs.. Use 'inferred_type' as a flag to suppress these errors.  */
+  if (!inferred_type
+      && (gfc_peek_ascii_char () == '(' && !sym->attr.dimension)
+      && !sym->attr.codimension
+      && sym->attr.select_type_temporary
+      && !sym->attr.select_rank_temporary)
+    inferred_type = true;
+
   /* For associate names, we may not yet know whether they are arrays or not.
      If the selector expression is unambiguously an array; eg. a full array
      or an array section, then the associate name must be an array and we can
@@ -2136,7 +2149,8 @@ gfc_match_varspec (gfc_expr *primary, int equiv_flag, bool sub_flag,
 	sym->ts.u.derived = tgt_expr->ts.u.derived;
     }
 
-  if ((equiv_flag && gfc_peek_ascii_char () == '(')
+  if ((inferred_type && !sym->as && gfc_peek_ascii_char () == '(')
+      || (equiv_flag && gfc_peek_ascii_char () == '(')
       || gfc_peek_ascii_char () == '[' || sym->attr.codimension
       || (sym->attr.dimension && sym->ts.type != BT_CLASS
 	  && !sym->attr.proc_pointer && !gfc_is_proc_ptr_comp (primary)
@@ -2194,7 +2208,7 @@ gfc_match_varspec (gfc_expr *primary, int equiv_flag, bool sub_flag,
   inquiry = false;
   if (m == MATCH_YES && sep == '%'
       && primary->ts.type != BT_CLASS
-      && primary->ts.type != BT_DERIVED)
+      && (primary->ts.type != BT_DERIVED || inferred_type))
     {
       match mm;
       old_loc = gfc_current_locus;
@@ -2209,7 +2223,8 @@ gfc_match_varspec (gfc_expr *primary, int equiv_flag, bool sub_flag,
     gfc_set_default_type (sym, 0, sym->ns);
 
   /* See if there is a usable typespec in the "no IMPLICIT type" error.  */
-  if (sym->ts.type == BT_UNKNOWN && m == MATCH_YES)
+  if ((sym->ts.type == BT_UNKNOWN || inferred_type)
+      && m == MATCH_YES)
     {
       bool permissible;
 
@@ -2220,7 +2235,8 @@ gfc_match_varspec (gfc_expr *primary, int equiv_flag, bool sub_flag,
 			|| tgt_expr->symtree->n.sym->attr.if_source
 								== IFSRC_DECL);
       permissible = permissible
-		    || (tgt_expr && tgt_expr->expr_type == EXPR_OP);
+		    || (tgt_expr && (tgt_expr->expr_type == EXPR_OP
+			|| (inquiry && tgt_expr->expr_type == EXPR_FUNCTION)));
 
       if (permissible)
 	{
@@ -2228,6 +2244,31 @@ gfc_match_varspec (gfc_expr *primary, int equiv_flag, bool sub_flag,
 	  sym->ts = tgt_expr->ts;
 	}
 
+      /* If this hasn't done the trick and the target expression is a function,
+	 then this must be a derived type if 'name' matches an accessible type
+	 both in this namespace and the as yet unparsed sibling function.  */
+      if (tgt_expr && tgt_expr->expr_type == EXPR_FUNCTION
+	  && (sym->ts.type == BT_UNKNOWN || inferred_type)
+	  && gfc_find_derived_types (sym, gfc_current_ns, name))
+	{
+	  sym->assoc->inferred_type = 1;
+	  /* The first returned type is as good as any at this stage.  */
+	  gfc_symbol **dts = &sym->assoc->derived_types;
+	  tgt_expr->ts.type = BT_DERIVED;
+	  tgt_expr->ts.kind = 0;
+	  tgt_expr->ts.u.derived = *dts;
+	  sym->ts = tgt_expr->ts;
+	  /* Delete the dt list to prevent interference with trans-type.cc's
+	     treatment of derived type decls, even if this process has to be
+	     done again for another primary expression.  */
+	  while (*dts && (*dts)->dt_next)
+	    {
+	      gfc_symbol **tmp = &(*dts)->dt_next;
+	      *dts = NULL;
+	      dts = tmp;
+	    }
+	}
+
       if (sym->ts.type == BT_UNKNOWN)
 	{
 	  gfc_error ("Symbol %qs at %C has no IMPLICIT type", sym->name);
@@ -2294,6 +2335,17 @@ gfc_match_varspec (gfc_expr *primary, int equiv_flag, bool sub_flag,
 		      break;
 		    }
 
+		  /* With 'associate(x => sin(cmplx(1,0)))', gfortran gets here
+		     with an unknown type-spec for primary, but it can be
+		     gleaned from the associate target.  */
+		  if ((tmp->u.i == INQUIRY_RE || tmp->u.i == INQUIRY_IM)
+		      && primary->ts.type == BT_UNKNOWN
+		      && primary->symtree && primary->symtree->n.sym
+		      && primary->symtree->n.sym->assoc
+		      && primary->symtree->n.sym->assoc->target
+		      && primary->symtree->n.sym->assoc->target->ts.type == BT_COMPLEX)
+		    primary->ts = primary->symtree->n.sym->assoc->target->ts;
+
 		  if ((tmp->u.i == INQUIRY_RE || tmp->u.i == INQUIRY_IM)
 		      && primary->ts.type != BT_COMPLEX)
 		    {
diff --git a/gcc/fortran/resolve.cc b/gcc/fortran/resolve.cc
index 02acc4aef31..3f48ec34932 100644
--- a/gcc/fortran/resolve.cc
+++ b/gcc/fortran/resolve.cc
@@ -5866,6 +5866,13 @@ resolve_variable (gfc_expr *e)
       return false;
     }
 
+  /* Guessed type variables are associate_names whose selector had not been
+     parsed at the time that the construct was parsed. Now the namespace is
+     being resolved, the TKR of the selector will be available for fixup of
+     the associate_name.  */
+  if (IS_INFERRED_TYPE (e) && e->ref)
+    gfc_fixup_inferred_type_refs (e);
+
   /* For variables that are used in an associate (target => object) where
      the object's basetype is array valued while the target is scalar,
      the ts' type of the component refs is still array valued, which
@@ -6171,6 +6178,115 @@ resolve_procedure:
 }
 
 
+/* 'sym' was initially guessed to be derived type but has been corrected
+   in resolve_assoc_var to be a class entity or the derived type correcting.
+   If a class entity it will certainly need the _data reference or the
+   reference derived type symbol correcting in the first component ref if
+   a derived type.  */
+
+void
+gfc_fixup_inferred_type_refs (gfc_expr *e)
+{
+  gfc_ref *ref;
+  gfc_symbol *sym, *derived;
+  gfc_expr *target;
+  sym = e->symtree->n.sym;
+
+  /* This is an associate_name whose selector is a component ref of a selector
+     that is a inferred type associate_name.  */
+  if (sym->ts.type != BT_DERIVED && sym->ts.type != BT_CLASS)
+    {
+      e->rank = sym->as ? sym->as->rank : 0;
+      sym->attr.dimension = e->rank ? 1 : 0;
+      if (!e->rank && e->ref->type == REF_ARRAY)
+	{
+	  ref = e->ref;
+	  e->ref = ref->next;
+	  free (ref);
+	}
+      return;
+    }
+
+  derived = sym->ts.type == BT_CLASS ? CLASS_DATA (sym)->ts.u.derived
+				     : sym->ts.u.derived;
+
+  /* Ensure that class symbols have an array spec and ensure that there
+     is a _data field reference following class type references.  */
+  if (sym->ts.type == BT_CLASS
+      && sym->assoc->target->ts.type == BT_CLASS)
+    {
+      e->rank = CLASS_DATA (sym)->as ? CLASS_DATA (sym)->as->rank : 0;
+      sym->attr.dimension = 0;
+      CLASS_DATA (sym)->attr.dimension = e->rank ? 1 : 0;
+      if (e->ref && (e->ref->type != REF_COMPONENT
+		     || e->ref->u.c.component->name[0] != '_'))
+	{
+	  ref = gfc_get_ref ();
+	  ref->type = REF_COMPONENT;
+	  ref->next = e->ref;
+	  e->ref = ref;
+	  ref->u.c.component = gfc_find_component (sym->ts.u.derived, "_data",
+						   true, true, NULL);
+	  ref->u.c.sym = sym->ts.u.derived;
+	}
+    }
+
+  /* Proceed as far as the first component reference and ensure that the
+     correct derived type is being used.  */
+  for (ref = e->ref; ref; ref = ref->next)
+    if (ref->type == REF_COMPONENT)
+      {
+	if (ref->u.c.component->name[0] != '_')
+	  ref->u.c.sym = derived;
+	else
+	  ref->u.c.sym = sym->ts.u.derived;
+	break;
+      }
+
+  /* Verify that the type inferrence mechanism has not introduced a spurious
+     array reference.  This can happen with an associate name, whose selector
+     is an element of another inferred type.  */
+  target = e->symtree->n.sym->assoc->target;
+  if (!(sym->ts.type == BT_CLASS ? CLASS_DATA (sym)->as : sym->as)
+      && e != target && !target->rank)
+    {
+      /* First case: array ref after the scalar class or derived associate_name.  */
+      if (e->ref && e->ref->type == REF_ARRAY
+	  && e->ref->u.ar.type != AR_ELEMENT)
+	{
+	  ref = e->ref;
+	  e->ref = ref->next;
+	  free (ref);
+
+	  /* If it hasn't a ref to the '_data' field supply one.  */
+	  if (sym->ts.type == BT_CLASS
+	      && !(e->ref->type == REF_COMPONENT
+		   && strcmp (e->ref->u.c.component->name, "_data")))
+	    {
+	      gfc_ref *new_ref;
+	      gfc_find_component (e->symtree->n.sym->ts.u.derived,
+				  "_data", true, true, &new_ref);
+	      new_ref->next = e->ref;
+	      e->ref = new_ref;
+	    }
+	}
+      /* 2nd case: a ref to the '_data' field followed by an array ref.  */
+      else if (e->ref && e->ref->type == REF_COMPONENT
+	       && strcmp (e->ref->u.c.component->name, "_data") == 0
+	       && e->ref->next && e->ref->next->type == REF_ARRAY
+	       && e->ref->next->u.ar.type != AR_ELEMENT)
+	{
+	  ref = e->ref->next;
+	  e->ref->next = e->ref->next->next;
+	  free (ref);
+	}
+    }
+
+  /* Now that all the references are OK, get the expression rank.  */
+  gfc_expression_rank (e);
+}
+
+
 /* Checks to see that the correct symbol has been host associated.
    The only situations where this arises are:
 	(i)  That in which a twice contained function is parsed after
@@ -9263,6 +9379,46 @@ resolve_assoc_var (gfc_symbol* sym, bool resolve_target)
       return;
     }
 
+  if (sym->assoc->inferred_type || IS_INFERRED_TYPE (target))
+    {
+      symbol_attribute attr;
+
+      /* By now, the type of the target has been fixed up.  */
+      if (sym->ts.type == BT_DERIVED
+	  && target->ts.type == BT_CLASS
+	  && !UNLIMITED_POLY (target))
+	{
+	  sym->ts = CLASS_DATA (target)->ts;
+	  if (!sym->as)
+	    sym->as = gfc_copy_array_spec (CLASS_DATA (target)->as);
+	  attr = CLASS_DATA (sym) ? CLASS_DATA (sym)->attr : sym->attr;
+	  sym->attr.dimension = target->rank ? 1 : 0;
+	  gfc_change_class (&sym->ts, &attr, sym->as,
+			    target->rank, gfc_get_corank (target));
+	  sym->as = NULL;
+	}
+      else if (target->ts.type == BT_DERIVED
+	       && target->symtree->n.sym->ts.type == BT_CLASS
+	       && IS_INFERRED_TYPE (target)
+	       && target->ref && target->ref->next
+	       && target->ref->next->type == REF_ARRAY
+	       && !target->ref->next->next)
+	{
+	  sym->ts = target->ts;
+	  attr = CLASS_DATA (sym) ? CLASS_DATA (sym)->attr : sym->attr;
+	  sym->attr.dimension = target->rank ? 1 : 0;
+	  gfc_change_class (&sym->ts, &attr, sym->as,
+			    target->rank, gfc_get_corank (target));
+	  sym->as = NULL;
+	  target->ts = sym->ts;
+	}
+      else if ((target->ts.type == BT_DERIVED)
+	       || (sym->ts.type == BT_CLASS && target->ts.type == BT_CLASS
+		   && CLASS_DATA (target)->as && !CLASS_DATA (sym)->as))
+	sym->ts = target->ts;
+    }
+
+
   if (target->expr_type == EXPR_NULL)
     {
       gfc_error ("Selector at %L cannot be NULL()", &target->where);
@@ -9289,15 +9445,50 @@ resolve_assoc_var (gfc_symbol* sym, bool resolve_target)
 			  || gfc_is_ptr_fcn (target));
 
   /* Finally resolve if this is an array or not.  */
+  if (target->expr_type == EXPR_FUNCTION
+      && (sym->ts.type == BT_CLASS || sym->ts.type == BT_DERIVED))
+    {
+      gfc_expression_rank (target);
+      if (target->ts.type == BT_DERIVED
+	  && !sym->as
+	  && target->symtree->n.sym->as)
+	{
+	  sym->as = gfc_copy_array_spec (target->symtree->n.sym->as);
+	  sym->attr.dimension = 1;
+	}
+      else if (target->ts.type == BT_CLASS
+	       && CLASS_DATA (target)->as)
+	{
+	  target->rank = CLASS_DATA (target)->as->rank;
+	  if (!(sym->ts.type == BT_CLASS && CLASS_DATA (sym)->as))
+	    {
+	      sym->ts = target->ts;
+	      sym->attr.dimension = 0;
+	    }
+	}
+    }
+
+
   if (sym->attr.dimension && target->rank == 0)
     {
       /* primary.cc makes the assumption that a reference to an associate
 	 name followed by a left parenthesis is an array reference.  */
-      if (sym->ts.type != BT_CHARACTER)
-	gfc_error ("Associate-name %qs at %L is used as array",
-		   sym->name, &sym->declared_at);
-      sym->attr.dimension = 0;
-      return;
+      if (sym->assoc->inferred_type && sym->ts.type != BT_CLASS)
+	{
+	  gfc_expression_rank (sym->assoc->target);
+	  sym->attr.dimension = sym->assoc->target->rank ? 1 : 0;
+	  if (!sym->attr.dimension && sym->as)
+	    sym->as = NULL;
+	}
+
+      if (sym->attr.dimension && target->rank == 0)
+	{
+	  if (sym->ts.type != BT_CHARACTER)
+	    gfc_error ("Associate-name %qs at %L is used as array",
+		       sym->name, &sym->declared_at);
+	  sym->attr.dimension = 0;
+	  return;
+	}
     }
 
   /* We cannot deal with class selectors that need temporaries.  */
@@ -9356,7 +9547,7 @@ resolve_assoc_var (gfc_symbol* sym, bool resolve_target)
 	     correct this now.  */
 	  gfc_typespec *ts = &target->ts;
 	  gfc_ref *ref;
-	  gfc_component *c;
+
 	  for (ref = target->ref; ref != NULL; ref = ref->next)
 	    {
 	      switch (ref->type)
@@ -9374,32 +9565,15 @@ resolve_assoc_var (gfc_symbol* sym, bool resolve_target)
 	    }
 	  /* Create a scalar instance of the current class type.  Because the
 	     rank of a class array goes into its name, the type has to be
-	     rebuild.  The alternative of (re-)setting just the attributes
+	     rebuilt.  The alternative of (re-)setting just the attributes
 	     and as in the current type, destroys the type also in other
 	     places.  */
 	  as = NULL;
 	  sym->ts = *ts;
 	  sym->ts.type = BT_CLASS;
 	  attr = CLASS_DATA (sym) ? CLASS_DATA (sym)->attr : sym->attr;
-	  attr.class_ok = 0;
-	  attr.associate_var = 1;
-	  attr.dimension = attr.codimension = 0;
-	  attr.class_pointer = 1;
-	  if (!gfc_build_class_symbol (&sym->ts, &attr, &as))
-	    gcc_unreachable ();
-	  /* Make sure the _vptr is set.  */
-	  c = gfc_find_component (sym->ts.u.derived, "_vptr", true, true, NULL);
-	  if (c->ts.u.derived == NULL)
-	    c->ts.u.derived = gfc_find_derived_vtab (sym->ts.u.derived);
-	  CLASS_DATA (sym)->attr.pointer = 1;
-	  CLASS_DATA (sym)->attr.class_pointer = 1;
-	  gfc_set_sym_referenced (sym->ts.u.derived);
-	  gfc_commit_symbol (sym->ts.u.derived);
-	  /* _vptr now has the _vtab in it, change it to the _vtype.  */
-	  if (c->ts.u.derived->attr.vtab)
-	    c->ts.u.derived = c->ts.u.derived->ts.u.derived;
-	  c->ts.u.derived->ns->types_resolved = 0;
-	  resolve_types (c->ts.u.derived->ns);
+	  gfc_change_class (&sym->ts, &attr, as, 0, 0);
+	  sym->as = NULL;
 	}
     }
 
@@ -9443,6 +9617,14 @@ resolve_assoc_var (gfc_symbol* sym, bool resolve_target)
 	}
     }
 
+  if (sym->ts.type == BT_CLASS
+      && IS_INFERRED_TYPE (target)
+      && target->ts.type == BT_DERIVED
+      && CLASS_DATA (sym)->ts.u.derived == target->ts.u.derived
+      && target->ref && target->ref->next
+      && target->ref->next->type == REF_ARRAY)
+    target->ts = target->symtree->n.sym->ts;
+
   /* If the target is a good class object, so is the associate variable.  */
   if (sym->ts.type == BT_CLASS && gfc_expr_attr (target).class_ok)
     sym->attr.class_ok = 1;
diff --git a/gcc/fortran/symbol.cc b/gcc/fortran/symbol.cc
index 5d9852c79e0..6d8cdf39f94 100644
--- a/gcc/fortran/symbol.cc
+++ b/gcc/fortran/symbol.cc
@@ -291,6 +291,19 @@ bool
 gfc_set_default_type (gfc_symbol *sym, int error_flag, gfc_namespace *ns)
 {
   gfc_typespec *ts;
+  gfc_expr *e;
+
+  /* Check to see if a function selector of unknown type can be resolved.  */
+  if (sym->assoc
+      && (e = sym->assoc->target)
+      && e->expr_type == EXPR_FUNCTION)
+    {
+      if (e->ts.type == BT_UNKNOWN)
+	gfc_resolve_expr (e);
+      sym->ts = e->ts;
+      if (sym->ts.type != BT_UNKNOWN)
+	return true;
+    }
 
   if (sym->ts.type != BT_UNKNOWN)
     gfc_internal_error ("gfc_set_default_type(): symbol already has a type");
@@ -307,7 +320,7 @@ gfc_set_default_type (gfc_symbol *sym, int error_flag, gfc_namespace *ns)
 		       "; did you mean %qs?",
 		       sym->name, &sym->declared_at, guessed);
 	  else
-	    gfc_error ("Symbol %qs at %L has no IMPLICIT type",
+	    gfc_error ("Symbol %qs at %L has no IMPLICIT type(symbol)",
 		       sym->name, &sym->declared_at);
 	  sym->attr.untyped = 1; /* Ensure we only give an error once.  */
 	}
@@ -2402,6 +2415,66 @@ bad:
 }
 
 
+/* Find all derived types in the uppermost namespace that have a component
+   a component called name and stash them in the assoc field of an
+   associate name variable.
+   This is used to infer the derived type of an associate name, whose selector
+   is a sibling derived type function that has not yet been parsed. Either
+   the derived type is use associated in both contained and sibling procedures
+   or it appears in the uppermost namespace.  */
+
+static int cts = 0;
+static void
+find_derived_types (gfc_symbol *sym, gfc_symtree *st, const char *name,
+		    bool contained)
+{
+  if (st->n.sym && st->n.sym->attr.flavor == FL_DERIVED
+      && !st->n.sym->attr.is_class
+      && ((contained && st->n.sym->attr.use_assoc) || !contained)
+      && gfc_find_component (st->n.sym, name, true, true, NULL))
+    {
+      /* Do the stashing.  */
+      cts++;
+      if (sym->assoc->derived_types)
+	st->n.sym->dt_next = sym->assoc->derived_types;
+      sym->assoc->derived_types = st->n.sym;
+    }
+
+  if (st->left)
+    find_derived_types (sym, st->left, name, contained);
+
+  if (st->right)
+    find_derived_types (sym, st->right, name, contained);
+}
+
+int
+gfc_find_derived_types (gfc_symbol *sym, gfc_namespace *ns, const char *name)
+{
+  gfc_namespace *encompassing = NULL;
+  gcc_assert (sym->assoc);
+
+  cts = 0;
+  while (ns->parent)
+    {
+      if (!ns->parent->parent && ns->proc_name
+	  && (ns->proc_name->attr.function || ns->proc_name->attr.subroutine))
+	encompassing = ns;
+      ns = ns->parent;
+    }
+
+  if (!ns->contained)
+    return cts;
+
+  /* Search the top level namespace first.  */
+  find_derived_types (sym, ns->sym_root, name, false);
+
+  /* Then the encompassing namespace.  */
+  if (encompassing)
+    find_derived_types (sym, encompassing->sym_root, name, true);
+
+  return cts;
+}
+
 /* Find the component with the given name in the union type symbol.
    If ref is not NULL it will be set to the chain of components through which
    the component can actually be accessed. This is necessary for unions because
diff --git a/gcc/fortran/trans-expr.cc b/gcc/fortran/trans-expr.cc
index d63c304661a..bd14ce99ed6 100644
--- a/gcc/fortran/trans-expr.cc
+++ b/gcc/fortran/trans-expr.cc
@@ -3142,6 +3142,10 @@ gfc_conv_variable (gfc_se * se, gfc_expr * expr)
       gcc_assert (se->string_length);
     }
 
+  /* Some expressions leak through that haven't been fixed up.  */
+  if (IS_INFERRED_TYPE (expr) && expr->ref)
+    gfc_fixup_inferred_type_refs (expr);
+
   gfc_typespec *ts = &sym->ts;
   while (ref)
     {
diff --git a/gcc/fortran/trans-stmt.cc b/gcc/fortran/trans-stmt.cc
index e09828e218b..1ec76f9778c 100644
--- a/gcc/fortran/trans-stmt.cc
+++ b/gcc/fortran/trans-stmt.cc
@@ -1747,9 +1747,9 @@ trans_associate_var (gfc_symbol *sym, gfc_wrapped_block *block)
   e = sym->assoc->target;
 
   class_target = (e->expr_type == EXPR_VARIABLE)
-		    && e->ts.type == BT_CLASS
-		    && (gfc_is_class_scalar_expr (e)
-			|| gfc_is_class_array_ref (e, NULL));
+		  && e->ts.type == BT_CLASS
+		  && (gfc_is_class_scalar_expr (e)
+		      || gfc_is_class_array_ref (e, NULL));
 
   unlimited = UNLIMITED_POLY (e);
 
@@ -2043,6 +2043,10 @@ trans_associate_var (gfc_symbol *sym, gfc_wrapped_block *block)
 	{
 	  gfc_conv_expr (&se, e);
 	  se.expr = gfc_evaluate_now (se.expr, &se.pre);
+	  /* Finalize the expression and free if it is allocatable.  */
+	  gfc_finalize_tree_expr (&se, NULL, gfc_expr_attr (e), e->rank);
+	  gfc_add_block_to_block (&se.post, &se.finalblock);
+	  need_len_assign = false;
 	}
       else if (sym->ts.type == BT_CLASS && CLASS_DATA (sym)->attr.dimension)
 	{
@@ -2157,26 +2161,36 @@ trans_associate_var (gfc_symbol *sym, gfc_wrapped_block *block)
 	    {
 	      tree stmp;
 	      tree dtmp;
+	      tree ctmp;
 
-	      se.expr = ctree;
+	      ctmp = ctree;
 	      dtmp = TREE_TYPE (TREE_TYPE (sym->backend_decl));
 	      ctree = gfc_create_var (dtmp, "class");
 
-	      stmp = gfc_class_data_get (se.expr);
+	      if (IS_INFERRED_TYPE (e)
+		  && !GFC_CLASS_TYPE_P (TREE_TYPE (se.expr)))
+		stmp = se.expr;
+	      else
+		stmp = gfc_class_data_get (ctmp);
+
 	      /* Coarray scalar component expressions can emerge from
 		 the front end as array elements of the _data field.  */
 	      if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (stmp)))
 		stmp = gfc_conv_descriptor_data_get (stmp);
+
+	      if (!POINTER_TYPE_P (TREE_TYPE (stmp)))
+		stmp = gfc_build_addr_expr (NULL, stmp);
+
 	      dtmp = gfc_class_data_get (ctree);
 	      stmp = fold_convert (TREE_TYPE (dtmp), stmp);
 	      gfc_add_modify (&se.pre, dtmp, stmp);
-	      stmp = gfc_class_vptr_get (se.expr);
+	      stmp = gfc_class_vptr_get (ctmp);
 	      dtmp = gfc_class_vptr_get (ctree);
 	      stmp = fold_convert (TREE_TYPE (dtmp), stmp);
 	      gfc_add_modify (&se.pre, dtmp, stmp);
 	      if (UNLIMITED_POLY (sym))
 		{
-		  stmp = gfc_class_len_get (se.expr);
+		  stmp = gfc_class_len_get (ctmp);
 		  dtmp = gfc_class_len_get (ctree);
 		  stmp = fold_convert (TREE_TYPE (dtmp), stmp);
 		  gfc_add_modify (&se.pre, dtmp, stmp);