Fix Solaris symbol versioning (PR libstdc++/54872)

	PR libstdc++/54872
	* config/abi/pre/gnu.ver (GLIBCXX_3.4.11) [!__sun__ && !__svr4__]:
	Don't export _ZNSt12system_errorC*.

From-SVN: r192349

libstdc++-v3/ChangeLog

+2012-10-11  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	PR libstdc++/54872
+	* config/abi/pre/gnu.ver (GLIBCXX_3.4.11) [!__sun__ && !__svr4__]:
+	Don't export _ZNSt12system_errorC*.
+
 2012-10-10  Jack Howarth  <howarth@bromo.med.uc.edu>
 	    Jonathan Wakely  <jwakely.gcc@gmail.com>
 

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

@@ -1057,7 +1057,12 @@ GLIBCXX_3.4.11 {
     _ZTISt12system_error;
     _ZTVSt12system_error;
     _ZNSt12system_errorD*Ev;
+    # Those template instantiations weren't exported on Solaris in GCC 4.6
+    # and aren't necessary for correct operation, so don't emit them now
+    # (PR libstdc++/54872).
+#if !defined(__sun__) && !defined(__svr4__)
     _ZNSt12system_errorC*;
+#endif
 
     _ZNKSt4hashISt10error_codeEclES0_;