Add missing exports for symbols used by directory iterators

	* config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
	__shared_ptr instantiations used by gcc4-compatible ABI.

From-SVN: r268357

libstdc++-v3/ChangeLog

 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
 
+	* config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
+	__shared_ptr instantiations used by gcc4-compatible ABI.
+
 	* include/experimental/forward_list (experimental::erase): Qualify
 	call to erase_if.
 	* include/experimental/list (experimental::erase): Likewise.

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

@@ -2225,6 +2225,12 @@ GLIBCXX_3.4.26 {
     _ZNSt10filesystem7__cxx1128recursive_directory_iteratoraSEOS1_;
     _ZNSt10filesystem7__cxx1128recursive_directory_iteratorppEv;
 
+    _ZNSt12__shared_ptrINSt10filesystem4_DirELN9__gnu_cxx12_Lock_policyE2EEC1Ev;
+    _ZNSt12__shared_ptrINSt10filesystem4_DirELN9__gnu_cxx12_Lock_policyE2EEC1EOS4_;
+    _ZNSt12__shared_ptrINSt10filesystem4_DirELN9__gnu_cxx12_Lock_policyE2EEaSEOS4_;
+    _ZNSt12__shared_ptrINSt10filesystem28recursive_directory_iterator10_Dir_stackELN9__gnu_cxx12_Lock_policyE2EEC1Ev;
+    _ZNSt12__shared_ptrINSt10filesystem28recursive_directory_iterator10_Dir_stackELN9__gnu_cxx12_Lock_policyE2EEC1EOS5_;
+
     _ZNSt12__shared_ptrINSt10filesystem7__cxx114_DirELN9__gnu_cxx12_Lock_policyE2EEC1Ev;
     _ZNSt12__shared_ptrINSt10filesystem7__cxx114_DirELN9__gnu_cxx12_Lock_policyE2EEC1EOS5_;
     _ZNSt12__shared_ptrINSt10filesystem7__cxx114_DirELN9__gnu_cxx12_Lock_policyE2EEaSEOS5_;