1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/fortran/resolve.c b/gcc/fortran/resolve.c
index e28d704..485d331 100644
--- a/gcc/fortran/resolve.c
+++ b/gcc/fortran/resolve.c
@@ -2204,6 +2204,16 @@ resolve_function (gfc_expr *expr)
   if (expr->symtree)
     sym = expr->symtree->n.sym;
 
+  if (sym && sym->attr.intrinsic
+      && !gfc_find_function (sym->name)
+      && gfc_find_subroutine (sym->name)
+      && sym->attr.function)
+    {
+      gfc_error ("Intrinsic subroutine '%s' used as "
+		  "a function at %L", sym->name, &expr->where);
+      return FAILURE;
+    }
+
   if (sym && sym->attr.flavor == FL_VARIABLE)
     {
       gfc_error ("'%s' at %L is not a function", sym->name, &expr->where);