Bug#791170: libsigc++-2.0: library transition may be needed when GCC 5 is the default

[Matthias Klose]

Control: tags -1 + confirmed

when built using GCC 5:

--- debian/libsigc++-2.0-0c2a.symbols (libsigc++-2.0-0c2a_2.4.1-1build1_amd64)
+++ dpkg-gensymbolsYy2UI3       2015-07-14 05:51:02.413969865 +0000
@@ -86,5 +86,6 @@
  _ZNK4sigc9trackable13callback_listEv at Base 2.2.0
  _ZNK4sigc9trackable27add_destroy_notify_callbackEPvPFS1_S1_E at Base 2.2.0
  _ZNK4sigc9trackable30remove_destroy_notify_callbackEPv at Base 2.2.0
-
(optional)_ZNSt10_List_baseIN4sigc8internal18trackable_callbackESaIS2_EE8_M_clearEv at Base
2.2.0
- (optional)_ZNSt10_List_baseIN4sigc9slot_baseESaIS1_EE8_M_clearEv at Base 2.2.0
+#MISSING: 2.4.1-1build1#
(optional)_ZNSt10_List_baseIN4sigc8internal18trackable_callbackESaIS2_EE8_M_clearEv at Base
2.2.0
+#MISSING: 2.4.1-1build1#
(optional)_ZNSt10_List_baseIN4sigc9slot_baseESaIS1_EE8_M_clearEv at Base 2.2.0
+ _ZNSt7__cxx1110_List_baseIN4sigc9slot_baseESaIS2_EE8_M_clearEv at Base 2.4.1-1build1