diff mbox series

[testsuite] Add dg-require-fileio to some libstdc++ wchar_t tests

Message ID 8fdeb390-acc5-bc43-fc45-93c101801018@codesourcery.com
State New
Headers show
Series [testsuite] Add dg-require-fileio to some libstdc++ wchar_t tests | expand

Commit Message

Sandra Loosemore Aug. 31, 2018, 1:19 a.m. UTC 
One of the simulators we use for testing nios2-elf builds doesn't 
include full semihosted fileio support.  (IIRC it can do I/O to the 
console and open and close files, but doesn't support fseek, stat/fstat, 
unlink, etc).  There are a bunch of libstdc++ wchar_t/$test.cc test 
cases that fail on this target where the corresponding char/$test.cc 
test is skipped, because the char test case files already specify 
"dg-require-fileio" and the wchar_t ones don't.

I used grep etc to find all such pairs of test cases, and then added 
"dg-require-fileio" to the wchar_t files where it was missing.  Note 
that this patch touches more test cases than the ones that were actually 
failing, and I didn't confirm that all the similarly-named char and 
wchar_t files were actually testing the exact same things.

Is this OK to check in?  Or is some deeper analysis required to identify 
which tests are affected?

-Sandra

Comments

Jonathan Wakely Aug. 31, 2018, 11:09 a.m. UTC | #1 
On 30/08/18 19:19 -0600, Sandra Loosemore wrote:
>One of the simulators we use for testing nios2-elf builds doesn't 
>include full semihosted fileio support.  (IIRC it can do I/O to the 
>console and open and close files, but doesn't support fseek, 
>stat/fstat, unlink, etc).  There are a bunch of libstdc++ 
>wchar_t/$test.cc test cases that fail on this target where the 
>corresponding char/$test.cc test is skipped, because the char test 
>case files already specify "dg-require-fileio" and the wchar_t ones 
>don't.
>
>I used grep etc to find all such pairs of test cases, and then added 
>"dg-require-fileio" to the wchar_t files where it was missing.  Note 
>that this patch touches more test cases than the ones that were 
>actually failing,

Three of them use dg-require-namedlocale to only run when localedata
for a specific locale is available, and four are restricted to only be
tested for { target *-*-mingw* }, would that explain it?

>and I didn't confirm that all the similarly-named 
>char and wchar_t files were actually testing the exact same things.

These ones don't match the corresponding /char/ version:

libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/2.cc
libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/3.cc
libstdc++-v3/testsuite/27_io/basic_ifstream/cons/wchar_t/1.cc
libstdc++-v3/testsuite/27_io/basic_ofstream/cons/wchar_t/1.cc
libstdc++-v3/testsuite/27_io/basic_ofstream/open/wchar_t/1.cc
libstdc++-v3/testsuite/27_io/objects/wchar_t/10.cc

They do all use file I/O though.

>Is this OK to check in?  Or is some deeper analysis required to 
>identify which tests are affected?

I checked the files, most of them #include <fstream> so we can
safely assume they require file I/O. These ones don't include
<fstream> but they all use fopen and/or freopen:

libstdc++-v3/testsuite/27_io/objects/wchar_t/10.cc
libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-1.cc
libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-2.cc
libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-3.cc
libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-4.cc
libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-5.cc
libstdc++-v3/testsuite/ext/stdio_sync_filebuf/wchar_t/1.cc

So the patch seems fine. Thanks for keeping the test results clean.
diff mbox series

Patch

Index: libstdc++-v3/testsuite/21_strings/basic_string/inserters_extractors/wchar_t/10.cc
===================================================================
--- libstdc++-v3/testsuite/21_strings/basic_string/inserters_extractors/wchar_t/10.cc	(revision 264000)
+++ libstdc++-v3/testsuite/21_strings/basic_string/inserters_extractors/wchar_t/10.cc	(working copy)
@@ -18,6 +18,7 @@ 
 // 21.3.7.9 inserters and extractors
 
 // { dg-options "-DMAX_SIZE=505" { target simulator } }
+// { dg-require-fileio "" }
 
 #ifndef MAX_SIZE
 #define MAX_SIZE 777
Index: libstdc++-v3/testsuite/21_strings/basic_string/inserters_extractors/wchar_t/11.cc
===================================================================
--- libstdc++-v3/testsuite/21_strings/basic_string/inserters_extractors/wchar_t/11.cc	(revision 264000)
+++ libstdc++-v3/testsuite/21_strings/basic_string/inserters_extractors/wchar_t/11.cc	(working copy)
@@ -18,6 +18,7 @@ 
 // 21.3.7.9 inserters and extractors
 
 // { dg-options "-DMAX_SIZE=466" { target simulator } }
+// { dg-require-fileio "" }
 
 #ifndef MAX_SIZE
 #define MAX_SIZE 666
Index: libstdc++-v3/testsuite/21_strings/basic_string/inserters_extractors/wchar_t/5.cc
===================================================================
--- libstdc++-v3/testsuite/21_strings/basic_string/inserters_extractors/wchar_t/5.cc	(revision 264000)
+++ libstdc++-v3/testsuite/21_strings/basic_string/inserters_extractors/wchar_t/5.cc	(working copy)
@@ -23,6 +23,8 @@ 
 // working, not to mention other major details like char_traits, and
 // all of the string class.
 
+// { dg-require-fileio "" }
+
 #include <string>
 #include <fstream>
 #include <iostream>
Index: libstdc++-v3/testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc
===================================================================
--- libstdc++-v3/testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc	(working copy)
@@ -1,4 +1,5 @@ 
 // { dg-options "-std=gnu++17" }
+// { dg-require-fileio "" }
 
 // Copyright (C) 2013-2018 Free Software Foundation, Inc.
 //
Index: libstdc++-v3/testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/4.cc
===================================================================
--- libstdc++-v3/testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/4.cc	(revision 264000)
+++ libstdc++-v3/testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/4.cc	(working copy)
@@ -17,6 +17,8 @@ 
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
+// { dg-require-fileio "" }
+
 #include <iterator>
 #include <fstream>
 #include <algorithm>
Index: libstdc++-v3/testsuite/25_algorithms/find/istreambuf_iterators/wchar_t/2.cc
===================================================================
--- libstdc++-v3/testsuite/25_algorithms/find/istreambuf_iterators/wchar_t/2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/25_algorithms/find/istreambuf_iterators/wchar_t/2.cc	(working copy)
@@ -17,6 +17,8 @@ 
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
+// { dg-require-fileio "" }
+
 #include <iterator>
 #include <fstream>
 #include <algorithm>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-1.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-1.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-1.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.3 filebuf member functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-2.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-2.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.3 filebuf member functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-3.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-3.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-3.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.3 filebuf member functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-4.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-4.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/close/wchar_t/12790-4.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.3 filebuf member functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/11543.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/11543.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/11543.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.4 Overridden virtual functions
 
+// { dg-require-fileio "" }
+
 #include <fstream>
 #include <locale>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-1.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-1.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-1.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.4 Overridden virtual functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-2.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-2.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.4 Overridden virtual functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-3.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-3.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-3.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.4 Overridden virtual functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-4.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-4.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-4.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.4 Overridden virtual functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-1.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-1.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-1.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.4 Overridden virtual functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-2.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-2.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.4 Overridden virtual functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-4.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-4.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-4.cc	(working copy)
@@ -17,6 +17,8 @@ 
 
 // 27.8.1.4 Overridden virtual functions
 
+// { dg-require-fileio "" }
+
 #include <locale>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/2.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/2.cc	(working copy)
@@ -1,4 +1,5 @@ 
 // { dg-require-namedlocale "se_NO.UTF-8" }
+// { dg-require-fileio "" }
 
 // 2003-09-04  Petur Runolfsson  <peturr02@ru.is>
 
Index: libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/3.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/3.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_filebuf/underflow/wchar_t/3.cc	(working copy)
@@ -1,4 +1,5 @@ 
 // { dg-require-namedlocale "se_NO.UTF-8" }
+// { dg-require-fileio "" }
 
 // 2003-09-04  Petur Runolfsson  <peturr02@ru.is>
 
Index: libstdc++-v3/testsuite/27_io/basic_ifstream/cons/wchar_t/1.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_ifstream/cons/wchar_t/1.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_ifstream/cons/wchar_t/1.cc	(working copy)
@@ -16,6 +16,7 @@ 
 // <http://www.gnu.org/licenses/>.
 
 // { dg-do run { target *-*-mingw* } }
+// { dg-require-fileio "" }
 
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_ifstream/open/wchar_t/1.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_ifstream/open/wchar_t/1.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_ifstream/open/wchar_t/1.cc	(working copy)
@@ -18,6 +18,7 @@ 
 // 30.9.3.1 basic_ifstream constructors [ifstream.cons]
 
 // { dg-do run { target *-*-mingw* } }
+// { dg-require-fileio "" }
 
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_istream/extractors_character/wchar_t/4.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_istream/extractors_character/wchar_t/4.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_istream/extractors_character/wchar_t/4.cc	(working copy)
@@ -20,6 +20,7 @@ 
 // 27.6.1.2.3 basic_istream::operator>>
 
 // { dg-options "-DMAX_SIZE=466" { target simulator } }
+// { dg-require-fileio "" }
 
 #ifndef MAX_SIZE
 #define MAX_SIZE 666
Index: libstdc++-v3/testsuite/27_io/basic_istream/extractors_other/wchar_t/2.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_istream/extractors_other/wchar_t/2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_istream/extractors_other/wchar_t/2.cc	(working copy)
@@ -19,6 +19,8 @@ 
 // @require@ %-*.tst %-*.txt
 // @diff@ %-*.tst %-*.txt
 
+// { dg-require-fileio "" }
+
 #include <istream>
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_istream/get/wchar_t/2.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_istream/get/wchar_t/2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_istream/get/wchar_t/2.cc	(working copy)
@@ -19,6 +19,8 @@ 
 // @require@ %-*.tst %-*.txt
 // @diff@ %-*.tst %-*.txt
 
+// { dg-require-fileio "" }
+
 #include <istream>
 #include <sstream>
 #include <fstream>
Index: libstdc++-v3/testsuite/27_io/basic_istream/getline/wchar_t/5.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_istream/getline/wchar_t/5.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_istream/getline/wchar_t/5.cc	(working copy)
@@ -18,6 +18,7 @@ 
 // 27.6.1.3 unformatted input functions
 
 // { dg-options "-DMAX_LENGTH=7" { target simulator } }
+// { dg-require-fileio "" }
 
 #ifndef MAX_LENGTH
 #define MAX_LENGTH 777
Index: libstdc++-v3/testsuite/27_io/basic_istream/ignore/wchar_t/2.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_istream/ignore/wchar_t/2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_istream/ignore/wchar_t/2.cc	(working copy)
@@ -18,6 +18,7 @@ 
 // 27.6.1.3 unformatted input functions
 
 // { dg-options "-DMAX_SIZE=355" { target simulator } }
+// { dg-require-fileio "" }
 
 #ifndef MAX_SIZE
 #define MAX_SIZE 555
Index: libstdc++-v3/testsuite/27_io/basic_istream/ignore/wchar_t/3.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_istream/ignore/wchar_t/3.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_istream/ignore/wchar_t/3.cc	(working copy)
@@ -19,6 +19,8 @@ 
 // @require@ %-*.tst %-*.txt
 // @diff@ %-*.tst %-*.txt
 
+// { dg-require-fileio "" }
+
 #include <istream>
 #include <fstream>
 #include <limits>
Index: libstdc++-v3/testsuite/27_io/basic_istream/seekg/wchar_t/sstream.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_istream/seekg/wchar_t/sstream.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_istream/seekg/wchar_t/sstream.cc	(working copy)
@@ -22,6 +22,8 @@ 
 // @require@ %-*.tst %-*.txt
 // @diff@ %-*.tst %-*.txt
 
+// { dg-require-fileio "" }
+
 #include <istream>
 #include <sstream>
 #include <fstream>
Index: libstdc++-v3/testsuite/27_io/basic_istream/tellg/wchar_t/sstream.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_istream/tellg/wchar_t/sstream.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_istream/tellg/wchar_t/sstream.cc	(working copy)
@@ -20,6 +20,8 @@ 
 // @require@ %-*.tst %-*.txt
 // @diff@ %-*.tst %-*.txt
 
+// { dg-require-fileio "" }
+
 #include <istream>
 #include <sstream>
 #include <fstream>
Index: libstdc++-v3/testsuite/27_io/basic_ofstream/cons/wchar_t/1.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_ofstream/cons/wchar_t/1.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_ofstream/cons/wchar_t/1.cc	(working copy)
@@ -16,6 +16,7 @@ 
 // <http://www.gnu.org/licenses/>.
 
 // { dg-do run { target *-*-mingw* } }
+// { dg-require-fileio "" }
 
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_ofstream/open/wchar_t/1.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_ofstream/open/wchar_t/1.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_ofstream/open/wchar_t/1.cc	(working copy)
@@ -18,6 +18,7 @@ 
 // 30.9.4.1 basic_ofstream constructors [ofstream.cons]
 
 // { dg-do run { target *-*-mingw* } }
+// { dg-require-fileio "" }
 
 #include <fstream>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/wchar_t/1.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/wchar_t/1.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/wchar_t/1.cc	(working copy)
@@ -19,6 +19,8 @@ 
 // @require@ %-*.tst %-*.txt
 // @diff@ %-*.tst %-*.txt
 
+// { dg-require-fileio "" }
+
 #include <ostream>
 #include <sstream>
 #include <fstream>
Index: libstdc++-v3/testsuite/27_io/objects/wchar_t/10.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/objects/wchar_t/10.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/objects/wchar_t/10.cc	(working copy)
@@ -1,4 +1,5 @@ 
 // { dg-require-namedlocale "se_NO.UTF-8" }
+// { dg-require-fileio "" }
 
 // 2003-05-01  Petur Runolfsson  <peturr02@ru.is>
 
Index: libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-1.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-1.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-1.cc	(working copy)
@@ -18,6 +18,8 @@ 
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
+// { dg-require-fileio "" }
+
 #include <iostream>
 #include <cstdio>
 #include <testsuite_hooks.h>
Index: libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-2.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-2.cc	(working copy)
@@ -15,6 +15,8 @@ 
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
+// { dg-require-fileio "" }
+
 #include <iostream>
 #include <cstdio>
 #include <cwchar>
Index: libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-3.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-3.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-3.cc	(working copy)
@@ -18,6 +18,8 @@ 
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
+// { dg-require-fileio "" }
+
 #include <iostream>
 #include <cwchar>
 #include <cstdio>
Index: libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-4.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-4.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-4.cc	(working copy)
@@ -15,6 +15,8 @@ 
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
+// { dg-require-fileio "" }
+
 #include <iostream>
 #include <cstdio>
 #include <cwchar>
Index: libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-5.cc
===================================================================
--- libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-5.cc	(revision 264000)
+++ libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-5.cc	(working copy)
@@ -20,6 +20,7 @@ 
 // only returns characters that were read with cin.rdbuf()->sbumpc()
 
 // { dg-do run { xfail *-*-* } }
+// { dg-require-fileio "" }
 
 #include <iostream>
 #include <cstdio>
Index: libstdc++-v3/testsuite/experimental/string_view/inserters/wchar_t/2.cc
===================================================================
--- libstdc++-v3/testsuite/experimental/string_view/inserters/wchar_t/2.cc	(revision 264000)
+++ libstdc++-v3/testsuite/experimental/string_view/inserters/wchar_t/2.cc	(working copy)
@@ -1,4 +1,5 @@ 
 // { dg-do run { target c++14 } }
+// { dg-require-fileio "" }
 
 // Copyright (C) 2013-2018 Free Software Foundation, Inc.
 //
Index: libstdc++-v3/testsuite/ext/stdio_sync_filebuf/wchar_t/1.cc
===================================================================
--- libstdc++-v3/testsuite/ext/stdio_sync_filebuf/wchar_t/1.cc	(revision 264000)
+++ libstdc++-v3/testsuite/ext/stdio_sync_filebuf/wchar_t/1.cc	(working copy)
@@ -17,6 +17,8 @@ 
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
+// { dg-require-fileio "" }
+
 #include <ext/stdio_sync_filebuf.h>
 #include <cstring>
 #include <testsuite_hooks.h>