[Bug libstdc++/54314] [4.8 Regression] undefined references to 'construction vtable for std::ostream-in-std::basic_ostringstream, std::allocator >'

[bkoz at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54314



Benjamin Kosnik <bkoz at gcc dot gnu.org> changed:



           What    |Removed                     |Added

----------------------------------------------------------------------------

                 CC|                            |bkoz at gcc dot gnu.org



--- Comment #13 from Benjamin Kosnik <bkoz at gcc dot gnu.org> 2012-09-26 
19:06:12 UTC ---



Hey P, I think you mean:



diff --git a/libstdc++-v3/config/abi/pre/gnu.ver

b/libstdc++-v3/config/abi/pre/g

index 5265b21..396feec 100644

--- a/libstdc++-v3/config/abi/pre/gnu.ver

+++ b/libstdc++-v3/config/abi/pre/gnu.ver

@@ -1322,6 +1322,7 @@ GLIBCXX_3.4.17 {

 } GLIBCXX_3.4.16;



 GLIBCXX_3.4.18 {

+

   global:



     # Names inside the 'extern' block are demangled names.

@@ -1330,6 +1331,9 @@ GLIBCXX_3.4.18 {

       std::random_device::*;

     };



+    # construction vtable

+    _ZTCSt*;

+

 } GLIBCXX_3.4.17;



 # Symbols in the support library (libsupc++) have their own tag.





ie, not in CXXABI for std:: non-support things.



This is an interesting thread thanks for the info Kai, very informative. The

analysis looks good and patch looks correct, modulo above.



Anyway, i have to add this export to gnu-versioned as well, so if it's ok with

you I'll check in this modified patch along with the gnu-versioned-namespace

one.



best,

Benjamin