Include name of test in filesystem-test.XXXXXX filenames

Also fix some tests that were not cleaning up after themselves, as
identified by the change to nonexistent_path.

	* testsuite/util/testsuite_fs.h (nonexistent_path): Include name
	of the source file containing the caller.
	* testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
	directories created by test.
	* testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
	Likewise.
	* testsuite/experimental/filesystem/iterators/directory_iterator.cc:
	Likewise.
	* testsuite/experimental/filesystem/iterators/
	recursive_directory_iterator.cc: Likewise.

From-SVN: r267801

libstdc++-v3/ChangeLog

+2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
+
+	* testsuite/util/testsuite_fs.h (nonexistent_path): Include name
+	of the source file containing the caller.
+	* testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
+	directories created by test.
+	* testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
+	Likewise.
+	* testsuite/experimental/filesystem/iterators/directory_iterator.cc:
+	Likewise.
+	* testsuite/experimental/filesystem/iterators/
+	recursive_directory_iterator.cc: Likewise.
+
 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/88775

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

@@ -138,6 +138,9 @@ test05()
   static_assert( noexcept(begin(it)), "begin is noexcept" );
   VERIFY( end(it) == endit );
   static_assert( noexcept(end(it)), "end is noexcept" );
+
+  std::error_code ec;
+  remove_all(p, ec);
 }
 
 int

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

@@ -179,6 +179,9 @@ test05()
   static_assert( noexcept(begin(it)), "begin is noexcept" );
   VERIFY( end(it) == endit );
   static_assert( noexcept(end(it)), "end is noexcept" );
+
+  std::error_code ec;
+  remove_all(p, ec);
 }
 
 int

libstdc++-v3/testsuite/experimental/filesystem/iterators/directory_iterator.cc

@@ -129,6 +129,9 @@ test05()
   static_assert( noexcept(begin(it)), "begin is noexcept" );
   VERIFY( end(it) == endit );
   static_assert( noexcept(end(it)), "end is noexcept" );
+
+  std::error_code ec;
+  remove_all(p, ec);
 }
 
 int

libstdc++-v3/testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc

@@ -176,6 +176,9 @@ test05()
   static_assert( noexcept(begin(it)), "begin is noexcept" );
   VERIFY( end(it) == endit );
   static_assert( noexcept(end(it)), "end is noexcept" );
+
+  std::error_code ec;
+  remove_all(p, ec);
 }
 
 int

libstdc++-v3/testsuite/util/testsuite_fs.h

@@ -86,8 +86,18 @@ namespace __gnu_test
   // This is NOT supposed to be a secure way to get a unique name!
   // We just need a path that doesn't exist for testing purposes.
   test_fs::path
-  nonexistent_path()
+  nonexistent_path(std::string file = __builtin_FILE())
   {
+    // Include the caller's filename to help identify tests that fail to
+    // clean up the files they create.
+    // Remove .cc extension:
+    if (file.length() > 3 && file.compare(file.length() - 3, 3, ".cc") == 0)
+      file.resize(file.length() - 3);
+    // And directory:
+    auto pos = file.find_last_of("/\\");
+    if (pos != file.npos)
+      file.erase(0, pos+1);
+
     test_fs::path p;
 #if defined(_GNU_SOURCE) || _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 200112L
     char tmp[] = "filesystem-test.XXXXXX";
@@ -97,16 +107,22 @@ namespace __gnu_test
 	  std::error_code(errno, std::generic_category()));
     ::unlink(tmp);
     ::close(fd);
-    p = tmp;
+    if (!file.empty())
+      file.insert(0, 1, '-');
+    file.insert(0, tmp);
+    p = file;
 #else
-    char buf[64];
+    if (file.length() > 64)
+      file.resize(64);
+    char buf[128];
     static int counter;
 #if _GLIBCXX_USE_C99_STDIO
-    std::snprintf(buf, 64,
+    std::snprintf(buf, 128,
 #else
     std::sprintf(buf,
 #endif
-      "filesystem-test.%d.%lu", counter++, (unsigned long) ::getpid());
+      "filesystem-test.%d.%lu-%s", counter++, (unsigned long) ::getpid(),
+      file.c_str());
     p = buf;
 #endif
     return p;