PR libstdc++/89986 export directory_iterator::increment

	PR libstdc++/89986
	* config/abi/pre/gnu.ver: Add missing exports.
	* testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
	increment member.

From-SVN: r270174

libstdc++-v3/ChangeLog

 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
 
+	PR libstdc++/89986
+	* config/abi/pre/gnu.ver: Add missing exports.
+	* testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
+	increment member.
+
 	* config/abi/pre/gnu.ver: Export new symbols.
 	* include/bits/fs_dir.h (recursive_directory_iterator::options())
 	(recursive_directory_iterator::recursion_pending())

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

@@ -2200,13 +2200,14 @@ GLIBCXX_3.4.26 {
     _ZNSt10filesystem16weakly_canonical*;
 
     _ZNKSt10filesystem18directory_iteratordeEv;
+    _ZNSt10filesystem18directory_iteratorC[12]ERKNS_4pathENS_17directory_optionsEPSt10error_code;
+    _ZNSt10filesystem18directory_iterator9incrementERSt10error_code;
+    _ZNSt10filesystem18directory_iteratorppEv;
     _ZNKSt10filesystem28recursive_directory_iterator7optionsEv;
     _ZNKSt10filesystem28recursive_directory_iterator5depthEv;
     _ZNKSt10filesystem28recursive_directory_iterator17recursion_pendingEv;
     _ZNSt10filesystem28recursive_directory_iterator25disable_recursion_pendingEv;
     _ZNKSt10filesystem28recursive_directory_iteratordeEv;
-    _ZNSt10filesystem18directory_iteratorC[12]ERKNS_4pathENS_17directory_optionsEPSt10error_code;
-    _ZNSt10filesystem18directory_iteratorppEv;
     _ZNSt10filesystem28recursive_directory_iterator3popERSt10error_code;
     _ZNSt10filesystem28recursive_directory_iterator3popEv;
     _ZNSt10filesystem28recursive_directory_iterator9incrementERSt10error_code;
@@ -2216,13 +2217,14 @@ GLIBCXX_3.4.26 {
     _ZNSt10filesystem28recursive_directory_iteratorppEv;
 
     _ZNKSt10filesystem7__cxx1118directory_iteratordeEv;
+    _ZNSt10filesystem7__cxx1118directory_iteratorC[12]ERKNS0_4pathENS_17directory_optionsEPSt10error_code;
+    _ZNSt10filesystem7__cxx1118directory_iterator9incrementERSt10error_code;
+    _ZNSt10filesystem7__cxx1118directory_iteratorppEv;
     _ZNKSt10filesystem7__cxx1128recursive_directory_iterator7optionsEv;
     _ZNKSt10filesystem7__cxx1128recursive_directory_iterator5depthEv;
     _ZNKSt10filesystem7__cxx1128recursive_directory_iterator17recursion_pendingEv;
     _ZNKSt10filesystem7__cxx1128recursive_directory_iteratordeEv;
     _ZNSt10filesystem7__cxx1128recursive_directory_iterator25disable_recursion_pendingEv;
-    _ZNSt10filesystem7__cxx1118directory_iteratorC[12]ERKNS0_4pathENS_17directory_optionsEPSt10error_code;
-    _ZNSt10filesystem7__cxx1118directory_iteratorppEv;
     _ZNSt10filesystem7__cxx1128recursive_directory_iterator3popERSt10error_code;
     _ZNSt10filesystem7__cxx1128recursive_directory_iterator3popEv;
     _ZNSt10filesystem7__cxx1128recursive_directory_iterator9incrementERSt10error_code;

libstdc++-v3/testsuite/27_io/filesystem/iterators/directory_iterator.cc

@@ -100,6 +100,15 @@ test02()
   VERIFY( entry1.path() == p/"x" );
   VERIFY( iter == end(iter) );
 
+  // Test post-increment (libstdc++/89986)
+  ec = bad_ec;
+  iter = fs::directory_iterator(p, ec);
+  VERIFY( !ec );
+  VERIFY( iter != end(iter) );
+  iter.increment(ec);
+  VERIFY( !ec );
+  VERIFY( iter == end(iter) );
+
   remove_all(p, ec);
 }