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/cp
authorpaolo <paolo@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 3 May 2012 14:32:15 +0000 (14:32 +0000)
committerpaolo <paolo@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 3 May 2012 14:32:15 +0000 (14:32 +0000)
2012-05-03  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/53186
* call.c (build_over_call): Handle final member functions
and class types.
(build_new_method_call_1): Do not handle here.

/testsuite
2012-05-03  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/53186
* g++.dg/other/final2.C: New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@187098 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/cp/ChangeLog
gcc/cp/call.c
gcc/testsuite/ChangeLog
gcc/testsuite/g++.dg/other/final2.C [new file with mode: 0644]

index a05e021..c7683bf 100644 (file)
@@ -1,3 +1,10 @@
+2012-05-03  Paolo Carlini  <paolo.carlini@oracle.com>
+
+       PR c++/53186
+       * call.c (build_over_call): Handle final member functions
+       and class types.
+       (build_new_method_call_1): Do not handle here.
+
 2012-04-17  Paolo Carlini  <paolo.carlini@oracle.com>
 
        PR c++/53003
index 74d5afa..e543528 100644 (file)
@@ -6464,6 +6464,12 @@ build_over_call (struct z_candidate *cand, int flags, tsubst_flags_t complain)
            return error_mark_node;
        }
 
+      /* See if the function member or the whole class type is declared
+        final and the call can be devirtualized.  */
+      if (DECL_FINAL_P (fn)
+         || CLASSTYPE_FINAL (TYPE_METHOD_BASETYPE (TREE_TYPE (fn))))
+       flags |= LOOKUP_NONVIRTUAL;
+
       /* [class.mfct.nonstatic]: If a nonstatic member function of a class
         X is called for an object that is not of type X, or of a type
         derived from X, the behavior is undefined.
@@ -7324,8 +7330,7 @@ build_new_method_call_1 (tree instance, tree fns, VEC(tree,gc) **args,
              /* Optimize away vtable lookup if we know that this function
                 can't be overridden.  */
              if (DECL_VINDEX (fn) && ! (flags & LOOKUP_NONVIRTUAL)
-                 && (resolves_to_fixed_type_p (instance, 0)
-                     || DECL_FINAL_P (fn) || CLASSTYPE_FINAL (basetype)))
+                 && resolves_to_fixed_type_p (instance, 0))
                flags |= LOOKUP_NONVIRTUAL;
               if (explicit_targs)
                 flags |= LOOKUP_EXPLICIT_TMPL_ARGS;
index ec74039..0451651 100644 (file)
@@ -1,3 +1,8 @@
+2012-05-03  Paolo Carlini  <paolo.carlini@oracle.com>
+
+       PR c++/53186
+       * g++.dg/other/final2.C: New.
+
 2012-05-03  Jakub Jelinek  <jakub@redhat.com>
 
        PR debug/53174
diff --git a/gcc/testsuite/g++.dg/other/final2.C b/gcc/testsuite/g++.dg/other/final2.C
new file mode 100644 (file)
index 0000000..a075622
--- /dev/null
@@ -0,0 +1,27 @@
+// PR c++/53186
+// { dg-options "-fdump-tree-original -std=c++11"  }
+
+struct F1
+{
+  virtual void operator()() final;
+  virtual operator int() final;
+  virtual int operator++() final;
+};
+
+struct F2 final
+{
+  virtual void operator()();
+  virtual operator int();
+  virtual int operator++();
+};
+
+void fooF1(F1& a) { a(); int m = a; ++a; }
+void fooF2(F2& a) { a(); int m = a; ++a; }
+
+// { dg-final { scan-tree-dump-times "F1::operator\\(\\)" 1 "original" } }
+// { dg-final { scan-tree-dump-times "F1::operator int" 1 "original" } }
+// { dg-final { scan-tree-dump-times "F1::operator\\+\\+" 1 "original" } }
+// { dg-final { scan-tree-dump-times "F2::operator\\(\\)" 1 "original" } }
+// { dg-final { scan-tree-dump-times "F2::operator int" 1 "original" } }
+// { dg-final { scan-tree-dump-times "F2::operator\\+\\+" 1 "original" } }
+// { dg-final { cleanup-tree-dump "original" } }