Run most tests in both C++98 and C++11 modes.

gcc/testsuite/
	* lib/target-supports.exp (check_effective_target_c++11): New.
	(check_effective_target_c++98): New.
	* lib/g++-dg.exp (g++-dg-runtest): New.
	* [various.exp]: Use g++-dg-runtest.
	* [various.C]: Fix for C++11 mode.
gcc/cp/
	* Make-lang.in (check_g++_parallelize): Add dg-torture.exp.
	(check-c++0x): Obsolete.
/
	* Makefile.def (language=c++): Remove check-c++0x.
	* Makefile.in (check-gcc-c++): Regenerate.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181222 138bc75d-0d04-0410-961f-82ee72b054a4

51 files changed, 197 insertions, 100 deletions

diff --git a/ChangeLog b/ChangeLog
index c25db94119f..bb781a889cf 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-11-09  Jason Merrill  <jason@redhat.com>
+
+	* Makefile.def (language=c++): Remove check-c++0x.
+	* Makefile.in (check-gcc-c++): Regenerate.
+
 2011-11-08  Richard Henderson  <rth@redhat.com>
 
 	* configure.ac: Test for libitm directory present first.
diff --git a/Makefile.def b/Makefile.def
index b94dabfffe9..b4236bac086 100644
--- a/Makefile.def
+++ b/Makefile.def
@@ -513,7 +513,7 @@ dependencies = { module=configure-target-newlib; on=all-ld; };
 dependencies = { module=configure-target-libgfortran; on=all-target-libquadmath; };
 
 languages = { language=c;	gcc-check-target=check-gcc; };
-languages = { language=c++;	gcc-check-target="check-c++ check-c++0x";
+languages = { language=c++;	gcc-check-target=check-c++;
 				lib-check-target=check-target-libstdc++-v3;
 				lib-check-target=check-target-libmudflap-c++; };
 languages = { language=fortran;	gcc-check-target=check-fortran;
diff --git a/Makefile.in b/Makefile.in
index 900c325849b..c377f577332 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -40661,7 +40661,7 @@ check-gcc-c++:
 	r=`${PWD_COMMAND}`; export r; \
 	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
 	$(HOST_EXPORTS) \
-	(cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) check-c++ check-c++0x);
+	(cd gcc && $(MAKE) $(GCC_FLAGS_TO_PASS) check-c++);
 check-c++: check-gcc-c++ check-target-libstdc++-v3 check-target-libmudflap-c++
 
 .PHONY: check-gcc-fortran check-fortran
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 03ffecec7bf..cba11e1374c 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,8 @@
 2011-11-09  Jason Merrill  <jason@redhat.com>
 
+	* Make-lang.in (check_g++_parallelize): Add dg-torture.exp.
+	(check-c++0x): Obsolete.
+
 	* pt.c (invalid_nontype_parm_type_p): Avoid printing "<type error>".
 
 	* pt.c (convert_nontype_argument): Only integral arguments
diff --git a/gcc/cp/Make-lang.in b/gcc/cp/Make-lang.in
index 650fc385096..0ce01ac49e2 100644
--- a/gcc/cp/Make-lang.in
+++ b/gcc/cp/Make-lang.in
@@ -152,8 +152,7 @@ c++.srcman: doc/g++.1
 check-c++ : check-g++
 # Run the testsute in C++0x mode.
 check-c++0x:
-	$(MAKE) RUNTESTFLAGS="$(RUNTESTFLAGS) --extra_opts,-std=gnu++0x" \
-	  TESTSUITEDIR="$(TESTSUITEDIR).c++0x" check-g++
+	@echo Normal 'make check' now runs the testsuite in C++11 mode as well as C++98.
 # Run the testsuite with garbage collection at every opportunity.
 check-g++-strict-gc:
 	$(MAKE) RUNTESTFLAGS="$(RUNTESTFLAGS) --extra_opts,--param,ggc-min-heapsize=0,--param,ggc-min-expand=0" \
@@ -163,7 +162,7 @@ check-c++-subtargets : check-g++-subtargets
 lang_checks += check-g++
 lang_checks_parallelized += check-g++
 # For description see comment above check_gcc_parallelize in gcc/Makefile.in.
-check_g++_parallelize = old-deja.exp dg.exp
+check_g++_parallelize = old-deja.exp dg.exp dg-torture.exp
 
 #
 # Install hooks:
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 737a614a313..cff301e427d 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,4 +1,53 @@
-2011-11-09  Jason Merrill  <jason@redhat.com>
+2011-11-08  Jason Merrill  <jason@redhat.com>
+
+	Run most C++ tests in both C++98 and C++11 modes.
+	* lib/target-supports.exp (check_effective_target_c++11): New.
+	(check_effective_target_c++98): New.
+	* lib/g++-dg.exp (g++-dg-runtest): New.
+	* g++.dg/dg.exp: Use g++-dg-runtest.
+	* g++.dg/charset/charset.exp: Likewise.
+	* g++.dg/debug/dwarf2/dwarf2.exp: Likewise.
+	* g++.dg/dfp/dfp.exp: Likewise.
+	* g++.dg/gcov/gcov.exp: Likewise.
+	* g++.dg/gomp/gomp.exp: Likewise.
+	* g++.dg/graphite/graphite.exp: Likewise.
+	* g++.dg/tls/tls.exp: Likewise.
+	* g++.dg/tm/tm.exp: Likewise.
+	* g++.dg/vect/vect.exp: Likewise.
+	* g++.old-deja/old-deja.exp: Likewise.
+	* g++.dg/simulate-thread/simulate-thread.exp: Pass -std flags
+	with some of the torture options.
+	* g++.dg/abi/mangle4.C: Move to template/nontype25.C.
+	* g++.dg/template/sfinae6_neg.C: Add C++11 error.
+	* g++.dg/init/null1.C: Only run in C++98.
+	* g++.dg/warn/Wconversion-null-3.C: Likewise.
+	* g++.old-deja/g++.benjamin/p12475.C: Likewise.
+	* g++.old-deja/g++.brendan/crash64.C: Likewise.
+	* g++.old-deja/g++.other/anon9.C: Likewise.
+	* g++.old-deja/g++.other/linkage1.C: Likewise.
+	* g++.old-deja/g++.other/linkage2.C: Likewise.
+	* g++.old-deja/g++.pt/t29.C: Likewise.
+	* g++.old-deja/g++.pt/t30.C: Likewise.
+	* g++.dg/cpp0x/variadic60.C: Only error in C++98.
+	* g++.dg/ext/anon-struct4.C: Likewise.
+	* g++.dg/init/brace2.C: Likewise.
+	* g++.dg/init/brace6.C: Likewise.
+	* g++.dg/other/anon3.C: Likewise.
+	* g++.dg/template/arg2.C: Likewise.
+	* g++.old-deja/g++.brendan/cvt1.C: Likewise.
+	* g++.old-deja/g++.brendan/enum11.C: Likewise.
+	* g++.old-deja/g++.brendan/enum8.C: Likewise.
+	* g++.old-deja/g++.brendan/enum9.C: Likewise.
+	* g++.old-deja/g++.brendan/friend3.C: Likewise.
+	* g++.old-deja/g++.brendan/init2.C: Likewise.
+	* g++.old-deja/g++.brendan/init4.C: Likewise.
+	* g++.old-deja/g++.brendan/misc14.C: Likewise.
+	* g++.old-deja/g++.jason/cond.C: Likewise.
+	* g++.old-deja/g++.law/init1.C: Likewise.
+	* g++.old-deja/g++.law/operators32.C: Likewise.
+	* g++.old-deja/g++.pt/enum6.C: Likewise.
+	* g++.old-deja/g++.pt/explicit70.C: Likewise.
+	* g++.old-deja/g++.pt/ptrmem6.C: Likewise.
 
 	* g++.dg/eh/new1.C: Adjust for C++11 mode.
 	* g++.dg/init/new11.C: Likewise.
diff --git a/gcc/testsuite/g++.dg/charset/charset.exp b/gcc/testsuite/g++.dg/charset/charset.exp
index 7d409d336ac..fe35f6a4403 100644
--- a/gcc/testsuite/g++.dg/charset/charset.exp
+++ b/gcc/testsuite/g++.dg/charset/charset.exp
@@ -37,8 +37,8 @@ if ![info exists DEFAULT_CHARSETCFLAGS] then {
 dg-init
 
 # Main loop.
-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.{c,cc,S} ]] \
-        "" $DEFAULT_CHARSETCFLAGS
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.{c,cc,S} ]] \
+        $DEFAULT_CHARSETCFLAGS
 
 # All done.
 dg-finish
diff --git a/gcc/testsuite/g++.dg/cpp0x/variadic60.C b/gcc/testsuite/g++.dg/cpp0x/variadic60.C
index b86711ff66b..8e1681eecc0 100644
--- a/gcc/testsuite/g++.dg/cpp0x/variadic60.C
+++ b/gcc/testsuite/g++.dg/cpp0x/variadic60.C
@@ -1 +1 @@
-template<typename... Args> class tuple; // { dg-error "variadic templates" }
+template<typename... Args> class tuple; // { dg-error "variadic templates" "" { target c++98 } }
diff --git a/gcc/testsuite/g++.dg/debug/dwarf2/dwarf2.exp b/gcc/testsuite/g++.dg/debug/dwarf2/dwarf2.exp
index 37dd794bed4..7b112ac6001 100644
--- a/gcc/testsuite/g++.dg/debug/dwarf2/dwarf2.exp
+++ b/gcc/testsuite/g++.dg/debug/dwarf2/dwarf2.exp
@@ -35,8 +35,8 @@ set comp_output [g++_target_compile \
 if { ! [string match "*: target system does not support the * debug format*" \
     $comp_output] } {
     remove-build-file "trivial.S"
-    dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C $srcdir/c-c++-common/dwarf2/*.c]] \
-	    "" $DEFAULT_CFLAGS
+    g++-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C $srcdir/c-c++-common/dwarf2/*.c]] \
+	    $DEFAULT_CFLAGS
 }
 
 # All done.
diff --git a/gcc/testsuite/g++.dg/dfp/dfp.exp b/gcc/testsuite/g++.dg/dfp/dfp.exp
index 4b15ca529b5..4d235e5c084 100644
--- a/gcc/testsuite/g++.dg/dfp/dfp.exp
+++ b/gcc/testsuite/g++.dg/dfp/dfp.exp
@@ -49,11 +49,11 @@ set DEFAULT_CXXFLAGS ""
 dg-init
 
 # Main loop.  Run the tests that are specific to C++.
-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.\[C]] \
-        "" $DEFAULT_CXXFLAGS
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.\[C]] \
+        $DEFAULT_CXXFLAGS
 # Run tests that are shared with C testing.
-dg-runtest [lsort [glob -nocomplain $srcdir/c-c++-common/dfp/*.c]] \
-        "" $DEFAULT_CXXFLAGS
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/c-c++-common/dfp/*.c]] \
+        $DEFAULT_CXXFLAGS
 
 # All done.
 dg-finish
diff --git a/gcc/testsuite/g++.dg/dg.exp b/gcc/testsuite/g++.dg/dg.exp
index ad1f7e23700..0730c76e820 100644
--- a/gcc/testsuite/g++.dg/dg.exp
+++ b/gcc/testsuite/g++.dg/dg.exp
@@ -22,7 +22,7 @@ load_lib g++-dg.exp
 # If a testcase doesn't have special options, use these.
 global DEFAULT_CXXFLAGS
 if ![info exists DEFAULT_CXXFLAGS] then {
-    set DEFAULT_CXXFLAGS " -ansi -pedantic-errors -Wno-long-long"
+    set DEFAULT_CXXFLAGS " -pedantic-errors -Wno-long-long"
 }
 
 # Initialize `dg'.
@@ -52,14 +52,14 @@ set tests [prune $tests $srcdir/$subdir/guality/*]
 set tests [prune $tests $srcdir/$subdir/simulate-thread/*]
 
 # Main loop.
-dg-runtest $tests "" $DEFAULT_CXXFLAGS
+g++-dg-runtest $tests $DEFAULT_CXXFLAGS
 
 # C/C++ common tests.
-dg-runtest [lsort [glob -nocomplain $srcdir/c-c++-common/*.\[cSi\]]] \
-	"" ""
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/c-c++-common/*.\[cSi\]]] \
+	""
 
-dg-runtest [lsort [glob -nocomplain $srcdir/c-c++-common/cpp/*.\[cS\]]] \
-	"" ""
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/c-c++-common/cpp/*.\[cS\]]] \
+	""
 
 
 # All done.
diff --git a/gcc/testsuite/g++.dg/ext/anon-struct4.C b/gcc/testsuite/g++.dg/ext/anon-struct4.C
index fa5bd4b3d8a..5d0bf71ae63 100644
--- a/gcc/testsuite/g++.dg/ext/anon-struct4.C
+++ b/gcc/testsuite/g++.dg/ext/anon-struct4.C
@@ -1,5 +1,5 @@
 // PR c++/14401
 
 struct { struct { int& i ; } bar ; } foo ; // { dg-error "uninitialized" "uninit" }
-// { dg-warning "anonymous" "anon" { target *-*-* } 3 }
+// { dg-warning "anonymous" "anon" { target c++98 } 3 }
 // { dg-message "should be initialized" "ref-uninit" { target *-*-* } 3 }
diff --git a/gcc/testsuite/g++.dg/gcov/gcov.exp b/gcc/testsuite/g++.dg/gcov/gcov.exp
index 08e00c45d55..73703dcaf91 100644
--- a/gcc/testsuite/g++.dg/gcov/gcov.exp
+++ b/gcc/testsuite/g++.dg/gcov/gcov.exp
@@ -39,6 +39,6 @@ if { $files != "" } {
 }
 
 # Main loop.
-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C]] "" ""
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C]] ""
 
 dg-finish
diff --git a/gcc/testsuite/g++.dg/gomp/gomp.exp b/gcc/testsuite/g++.dg/gomp/gomp.exp
index b99d302ddf5..445cea89983 100644
--- a/gcc/testsuite/g++.dg/gomp/gomp.exp
+++ b/gcc/testsuite/g++.dg/gomp/gomp.exp
@@ -27,7 +27,7 @@ if ![check_effective_target_fopenmp] {
 dg-init
 
 # Main loop.
-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C $srcdir/c-c++-common/gomp/*.c]] "" "-fopenmp"
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C $srcdir/c-c++-common/gomp/*.c]] "-fopenmp"
 
 # All done.
 dg-finish
diff --git a/gcc/testsuite/g++.dg/graphite/graphite.exp b/gcc/testsuite/g++.dg/graphite/graphite.exp
index 4b359c9b3ce..7c96f58c70d 100644
--- a/gcc/testsuite/g++.dg/graphite/graphite.exp
+++ b/gcc/testsuite/g++.dg/graphite/graphite.exp
@@ -46,14 +46,14 @@ set block_files       [lsort [glob -nocomplain $srcdir/$subdir/block-*.C ] ]
 
 # Tests to be compiled.
 set dg-do-what-default compile
-dg-runtest $scop_files        "" "-O2 -fgraphite -fdump-tree-graphite-all"
-dg-runtest $id_files          "" "-O2 -fgraphite-identity -ffast-math"
+g++-dg-runtest $scop_files        "-O2 -fgraphite -fdump-tree-graphite-all"
+g++-dg-runtest $id_files          "-O2 -fgraphite-identity -ffast-math"
 
 # Tests to be run.
 set dg-do-what-default run
-dg-runtest $run_id_files      "" "-O2 -fgraphite-identity"
-dg-runtest $interchange_files "" "-O2 -floop-interchange -fno-loop-block -fno-loop-strip-mine -ffast-math -fdump-tree-graphite-all"
-dg-runtest $block_files       "" "-O2 -floop-block -fno-loop-strip-mine -fno-loop-interchange -ffast-math -fdump-tree-graphite-all"
+g++-dg-runtest $run_id_files      "-O2 -fgraphite-identity"
+g++-dg-runtest $interchange_files "-O2 -floop-interchange -fno-loop-block -fno-loop-strip-mine -ffast-math -fdump-tree-graphite-all"
+g++-dg-runtest $block_files       "-O2 -floop-block -fno-loop-strip-mine -fno-loop-interchange -ffast-math -fdump-tree-graphite-all"
 
 # The default action for the rest of the files is 'compile'.
 set dg-do-what-default compile
@@ -62,7 +62,7 @@ foreach f $id_files          {lremove wait_to_run_files $f}
 foreach f $run_id_files      {lremove wait_to_run_files $f}
 foreach f $interchange_files {lremove wait_to_run_files $f}
 foreach f $block_files       {lremove wait_to_run_files $f}
-dg-runtest $wait_to_run_files "" "-ansi -pedantic-errors"
+g++-dg-runtest $wait_to_run_files " -pedantic-errors"
 
 # Clean up.
 set dg-do-what-default ${save-dg-do-what-default}
diff --git a/gcc/testsuite/g++.dg/init/brace2.C b/gcc/testsuite/g++.dg/init/brace2.C
index 619a20f3c70..fec9c6ce4d7 100644
--- a/gcc/testsuite/g++.dg/init/brace2.C
+++ b/gcc/testsuite/g++.dg/init/brace2.C
@@ -5,4 +5,4 @@ const char * y = { "hello" };
 int a = 2;
 int b = { 2,3 }; // { dg-error "requires one element in initializer" }
 int c = { { 2 } } ; // { dg-error "braces around scalar initializer" }
-int d = {}; // { dg-error "initializer" }
+int d = {}; // { dg-error "initializer" "" { target c++98 } }
diff --git a/gcc/testsuite/g++.dg/init/brace6.C b/gcc/testsuite/g++.dg/init/brace6.C
index e01b947429f..ca39b0180d0 100644
--- a/gcc/testsuite/g++.dg/init/brace6.C
+++ b/gcc/testsuite/g++.dg/init/brace6.C
@@ -18,7 +18,7 @@ int main()
 {
    int i = { 1 };
    int j = { 1, 2 }; /* { dg-error "requires one element" } */
-   A a = { 6 }; /* { dg-error "initialize" } */
+   A a = { 6 }; /* { dg-error "initialize" "" { target c++98 } } */
    B b = { 6 }; /* { dg-error "" } */
    C c = { 6 }; /* { dg-error "too many initializers" } */
    D d = { 6 };
diff --git a/gcc/testsuite/g++.dg/init/null1.C b/gcc/testsuite/g++.dg/init/null1.C
index eff3f610968..a76ae2a2574 100644
--- a/gcc/testsuite/g++.dg/init/null1.C
+++ b/gcc/testsuite/g++.dg/init/null1.C
@@ -1,6 +1,7 @@
 // PR c++/16489
+// { dg-do compile { target c++98 } }
 
 const int NULL = 0;
 int main() { 
-  double* p = NULL; 
+  double* p = NULL;
 }
diff --git a/gcc/testsuite/g++.dg/other/anon3.C b/gcc/testsuite/g++.dg/other/anon3.C
index 87116eb8901..707c2d58f9d 100644
--- a/gcc/testsuite/g++.dg/other/anon3.C
+++ b/gcc/testsuite/g++.dg/other/anon3.C
@@ -4,4 +4,4 @@
 
 // { dg-do compile }
 
-enum { a = 3 } x; // { dg-warning "anonymous type" }
+enum { a = 3 } x; // { dg-warning "anonymous type" "" { target c++98 } }
diff --git a/gcc/testsuite/g++.dg/simulate-thread/simulate-thread.exp b/gcc/testsuite/g++.dg/simulate-thread/simulate-thread.exp
index f9e6475c054..01e4aaf63cf 100644
--- a/gcc/testsuite/g++.dg/simulate-thread/simulate-thread.exp
+++ b/gcc/testsuite/g++.dg/simulate-thread/simulate-thread.exp
@@ -26,8 +26,8 @@ torture-init
 set-torture-options [list \
 	{ -O0 -g } \
 	{ -O1 -g } \
-	{ -O2 -g } \
-	{ -O3 -g } \
+	{ -O2 -g -std=c++98 } \
+	{ -O3 -g -std=c++11 } \
 	{ -Os -g } ]
 
 if [gdb-exists] {
diff --git a/gcc/testsuite/g++.dg/template/arg2.C b/gcc/testsuite/g++.dg/template/arg2.C
index 9fb7a68cc78..dabefc8778f 100644
--- a/gcc/testsuite/g++.dg/template/arg2.C
+++ b/gcc/testsuite/g++.dg/template/arg2.C
@@ -10,5 +10,5 @@ template <typename T> class X {};
 void fn ()
 {
   class L {};
-  X<L> f; // { dg-error "uses local type|trying to instantiate|no type|invalid type" "" }
+  X<L> f; // { dg-error "uses local type|trying to instantiate|no type|invalid type" "" { target c++98 } }
 }
diff --git a/gcc/testsuite/g++.dg/abi/mangle4.C b/gcc/testsuite/g++.dg/template/nontype25.C
index 3ce224716db..bcdcce5ea9b 100644
--- a/gcc/testsuite/g++.dg/abi/mangle4.C
+++ b/gcc/testsuite/g++.dg/template/nontype25.C
@@ -1,4 +1,3 @@
-// Test mangling of type casts
 // { dg-do compile }
 
 class A {};
@@ -8,8 +7,8 @@ template<const A* a> class C {};
 template<const B* b> class D {};
 template<B* b> class E {};
 
-template<const B* b> void f(D<b> &, C<static_cast<const A*>(b)> &) {} // { dg-error "" }
-template<const B* b> void g(D<b> &, E<const_cast<B*>(b)> &) {} // { dg-error "" }
+template<const B* b> void f(D<b> &, C<static_cast<const A*>(b)> &) {} // { dg-error "" "" { target c++98 } }
+template<const B* b> void g(D<b> &, E<const_cast<B*>(b)> &) {} // { dg-error "" "" { target c++98 } }
 
 B b;
 
@@ -17,8 +16,7 @@ int main()
 {
   C<static_cast<const A*>(&b)> c; // { dg-error "" }
   D<&b> d;
-  E<const_cast<B*>(&b)> e; // { dg-error "" }
-  f(d, c);
+  E<const_cast<B*>(&b)> e; // { dg-error "" "" { target c++98 } }
+  f(d, c);		   // { dg-error "" "" { target c++11 } }
   g(d, e);
 }
-
diff --git a/gcc/testsuite/g++.dg/template/sfinae6_neg.C b/gcc/testsuite/g++.dg/template/sfinae6_neg.C
index 2df4ade4720..d4be5dd03f0 100644
--- a/gcc/testsuite/g++.dg/template/sfinae6_neg.C
+++ b/gcc/testsuite/g++.dg/template/sfinae6_neg.C
@@ -14,7 +14,7 @@ template<typename T> struct enable_if<false, T> { };
 template<typename F, typename T1, typename T2>
   typename enable_if<sizeof(create_a<F>()(create_a<T1>(), create_a<T2>()), 1),
 		     yes_type>::type
-  check_is_callable2(type<F>, type<T1>, type<T2>);
+  check_is_callable2(type<F>, type<T1>, type<T2>); // { dg-error "within this context" "" { target c++11 } }
 
 no_type check_is_callable2(...);
 
diff --git a/gcc/testsuite/g++.dg/tls/tls.exp b/gcc/testsuite/g++.dg/tls/tls.exp
index 6450ea34f9b..7745cd52da4 100644
--- a/gcc/testsuite/g++.dg/tls/tls.exp
+++ b/gcc/testsuite/g++.dg/tls/tls.exp
@@ -22,14 +22,14 @@ load_lib g++-dg.exp
 # If a testcase doesn't have special options, use these.
 global DEFAULT_CXXFLAGS
 if ![info exists DEFAULT_CXXFLAGS] then {
-    set DEFAULT_CXXFLAGS " -ansi -pedantic-errors -Wno-long-long"
+    set DEFAULT_CXXFLAGS " -pedantic-errors -Wno-long-long"
 }
 
 # Initialize `dg'.
 dg-init
 
 # Main loop.
-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C]] "" $DEFAULT_CXXFLAGS
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C]] $DEFAULT_CXXFLAGS
 
 # All done.
 dg-finish
diff --git a/gcc/testsuite/g++.dg/tm/tm.exp b/gcc/testsuite/g++.dg/tm/tm.exp
index d8c76fe1e88..df40cdc1349 100644
--- a/gcc/testsuite/g++.dg/tm/tm.exp
+++ b/gcc/testsuite/g++.dg/tm/tm.exp
@@ -22,18 +22,18 @@ load_lib g++-dg.exp
 # If a testcase doesn't have special options, use these.
 global DEFAULT_CXXFLAGS
 if ![info exists DEFAULT_CXXFLAGS] then {
-    set DEFAULT_CXXFLAGS " -ansi -pedantic-errors -Wno-long-long"
+    set DEFAULT_CXXFLAGS " -pedantic-errors -Wno-long-long"
 }
 
 # Initialize `dg'.
 dg-init
 
 # Run the tests that are shared with C.
-dg-runtest [lsort [glob -nocomplain $srcdir/c-c++-common/tm/*.c]] \
-	"" $DEFAULT_CXXFLAGS
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/c-c++-common/tm/*.c]] \
+	$DEFAULT_CXXFLAGS
 # Run the C++ only tests.
-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C]] \
-	"" $DEFAULT_CXXFLAGS
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.C]] \
+	$DEFAULT_CXXFLAGS
 
 # All done.
 dg-finish
diff --git a/gcc/testsuite/g++.dg/vect/vect.exp b/gcc/testsuite/g++.dg/vect/vect.exp
index 76bd99a9862..7cb02d026fe 100644
--- a/gcc/testsuite/g++.dg/vect/vect.exp
+++ b/gcc/testsuite/g++.dg/vect/vect.exp
@@ -58,10 +58,10 @@ lappend VECT_SLP_CFLAGS "-fdump-tree-slp-details"
 dg-init
 
 # Main loop.
-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/pr*.{c,cc,S} ]] \
-        "" $DEFAULT_VECTCFLAGS
-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/slp-pr*.{c,cc,S} ]] \
-        "" $VECT_SLP_CFLAGS
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/pr*.{c,cc,S} ]] \
+        $DEFAULT_VECTCFLAGS
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/slp-pr*.{c,cc,S} ]] \
+        $VECT_SLP_CFLAGS
 
 #### Tests with special options
 global SAVED_DEFAULT_VECTCFLAGS
@@ -70,8 +70,8 @@ set SAVED_DEFAULT_VECTCFLAGS $DEFAULT_VECTCFLAGS
 # --param max-aliased-vops=0
 set DEFAULT_VECTCFLAGS $SAVED_DEFAULT_VECTCFLAGS
 lappend DEFAULT_VECTCFLAGS "--param max-aliased-vops=0"
-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/param-max-aliased*.\[cS\]]]  \
-        "" $DEFAULT_VECTCFLAGS 
+g++-dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/param-max-aliased*.\[cS\]]]  \
+        $DEFAULT_VECTCFLAGS
 
 # Clean up.
 set dg-do-what-default ${save-dg-do-what-default} 
diff --git a/gcc/testsuite/g++.dg/warn/Wconversion-null-3.C b/gcc/testsuite/g++.dg/warn/Wconversion-null-3.C
index 1942ee270bf..644ae1c40da 100644
--- a/gcc/testsuite/g++.dg/warn/Wconversion-null-3.C
+++ b/gcc/testsuite/g++.dg/warn/Wconversion-null-3.C
@@ -1,4 +1,5 @@
 // PR c++/48420
+// { dg-do compile { target c++98 } }
 
 void foo(int* p);
 
diff --git a/gcc/testsuite/g++.old-deja/g++.benjamin/p12475.C b/gcc/testsuite/g++.old-deja/g++.benjamin/p12475.C
index d3e121e1440..d41c26b4984 100644
--- a/gcc/testsuite/g++.old-deja/g++.benjamin/p12475.C
+++ b/gcc/testsuite/g++.old-deja/g++.benjamin/p12475.C
@@ -1,4 +1,4 @@
-// { dg-do assemble  }
+// { dg-do assemble { target c++98 } }
 // prms-id: 12475
 
 #include <limits.h>
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/crash64.C b/gcc/testsuite/g++.old-deja/g++.brendan/crash64.C
index 3c986928331..5fd31a6a2e8 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/crash64.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/crash64.C
@@ -1,4 +1,4 @@
-// { dg-do assemble  }
+// { dg-do assemble { target c++98 } }
 // GROUPS passed old-abort
 typedef __SIZE_TYPE__ size_t;
 typedef void (*RF_Ptr)(void *);
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/cvt1.C b/gcc/testsuite/g++.old-deja/g++.brendan/cvt1.C
index 1327f5acec6..544d59bf496 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/cvt1.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/cvt1.C
@@ -5,7 +5,7 @@
 class Thing
 {
 public:
-      typedef enum { GOOD_THING, BAD_THING, } ThingType ; // { dg-error "" } comma
+      typedef enum { GOOD_THING, BAD_THING, } ThingType ; // { dg-error "" "comma" { target c++98 } }
 	Thing (ThingType type) : thingType (type) { }
 	~Thing () { }
 private:
@@ -15,7 +15,7 @@ private:
 class Group
 {
 public:
-      typedef enum { THIS_GROUP, THAT_GROUP, } GroupType ; // { dg-error "" } comma
+      typedef enum { THIS_GROUP, THAT_GROUP, } GroupType ; // { dg-error "" "comma" { target c++98 } }
 	Group (GroupType type) : groupType (type), groupCount (0) { }
 	~Group () { }
 	void append (Thing* const &entry) { groupCount ++ ; }
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/enum11.C b/gcc/testsuite/g++.old-deja/g++.brendan/enum11.C
index 009333a18be..9c105609ec3 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/enum11.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/enum11.C
@@ -6,7 +6,7 @@ class X
     {
        oneMask = 0x0000FFFF,
        twoMask  = 0x000F0000,
-       thiMask = 0xFFF00000, // { dg-error "comma at end" }
+       thiMask = 0xFFF00000, // { dg-error "comma at end" "" { target c++98 } }
     };
     unsigned int foo;
 
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/enum8.C b/gcc/testsuite/g++.old-deja/g++.brendan/enum8.C
index ecf6fbf4ece..bbdda4bfe2b 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/enum8.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/enum8.C
@@ -6,7 +6,7 @@ class foo1
    enum foo1_enum
    {
       ENUM1,
-      ENUM2, // { dg-error "comma at end" }
+      ENUM2, // { dg-error "comma at end" "" { target c++98 } }
    };
 };
 
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/enum9.C b/gcc/testsuite/g++.old-deja/g++.brendan/enum9.C
index 88ecc73283d..d8a7d1bd47a 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/enum9.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/enum9.C
@@ -2,7 +2,7 @@
 // GROUPS passed enums
 enum fig {
     figgy,
-    pudding,  // { dg-error "comma at end" }
+    pudding,  // { dg-error "comma at end" "" { target c++98 } }
 };
 
 class X {
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/friend3.C b/gcc/testsuite/g++.old-deja/g++.brendan/friend3.C
index ecd85b44b09..209ea8c0e06 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/friend3.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/friend3.C
@@ -5,7 +5,7 @@ class B {
    friend class A;
 
    enum {
-      bEnum = 1, // { dg-error "comma at end" }
+      bEnum = 1, // { dg-error "comma at end" "" { target c++98 } }
    };
 
    int bArray[ bEnum ];
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/init2.C b/gcc/testsuite/g++.old-deja/g++.brendan/init2.C
index 0bf0abab262..1b376dc7802 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/init2.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/init2.C
@@ -2,4 +2,4 @@
 // GROUPS passed initialization
 // this should give an error in require_required_type about not
 // being allowed to have an initializer list in an argument list.
-int f(int a = {1});// { dg-error "" } .*
+int f(int a = {1});// { dg-error "" "" { target c++98 } }
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/init4.C b/gcc/testsuite/g++.old-deja/g++.brendan/init4.C
index aa2bfb65832..d3d1ffd2247 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/init4.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/init4.C
@@ -2,4 +2,4 @@
 // GROUPS passed initialization
 struct CharList { int i; };
 
-const CharList& terminals = { 1 }; // { dg-error "initializer lists" } c++0x
+const CharList& terminals = { 1 }; // { dg-error "initializer lists" "" { target c++98 } }
diff --git a/gcc/testsuite/g++.old-deja/g++.brendan/misc14.C b/gcc/testsuite/g++.old-deja/g++.brendan/misc14.C
index 09242a46fa5..d2e49095a3b 100644
--- a/gcc/testsuite/g++.old-deja/g++.brendan/misc14.C
+++ b/gcc/testsuite/g++.old-deja/g++.brendan/misc14.C
@@ -4,7 +4,7 @@ class X {
 public:
     enum e {
 	New // { dg-error "conflicts with previous" }
-	,   // { dg-error "comma at end" }
+	,   // { dg-error "comma at end" "" { target c++98 } }
     };
 
     static int New(int); // { dg-error "declaration of" }
diff --git a/gcc/testsuite/g++.old-deja/g++.jason/cond.C b/gcc/testsuite/g++.old-deja/g++.jason/cond.C
index a6e5ba0db2b..b1e692e8a69 100644
--- a/gcc/testsuite/g++.old-deja/g++.jason/cond.C
+++ b/gcc/testsuite/g++.old-deja/g++.jason/cond.C
@@ -52,7 +52,7 @@ int main()
   // { dg-error "is initialized like a variable" "var" { target *-*-* } 51 }
     ;
   
-  if (int a[2] = {1, 2})	// { dg-error "extended init" } 
+  if (int a[2] = {1, 2})	// { dg-error "extended init" "" { target c++98 } }
     ;
 
 }
diff --git a/gcc/testsuite/g++.old-deja/g++.law/init1.C b/gcc/testsuite/g++.old-deja/g++.law/init1.C
index 1727e387b2d..3cce388f292 100644
--- a/gcc/testsuite/g++.old-deja/g++.law/init1.C
+++ b/gcc/testsuite/g++.old-deja/g++.law/init1.C
@@ -9,12 +9,12 @@ public:
 
 class bar {
 public:
-  foo f[3] = { 1, 2, 3 };   // works: f[0] = 1, f[1] = 2, f[2] = 3 // { dg-error "" } ANSI C++ forbids initialization of member f;
+  foo f[3] = { 1, 2, 3 };   // works: f[0] = 1, f[1] = 2, f[2] = 3 // { dg-error "" "" { target c++98 } } ANSI C++ forbids initialization of member f;
 };
 
 class bar2 {
 public:
-      foo f[3] = { foo(1), foo(2), foo(3) }; // { dg-error "" } ANSI C++ forbids initialization of member f;
+      foo f[3] = { foo(1), foo(2), foo(3) }; // { dg-error "" "" { target c++98 } } ANSI C++ forbids initialization of member f;
   // does not compile -- error: field initializer is not constant
 };
 
diff --git a/gcc/testsuite/g++.old-deja/g++.law/operators32.C b/gcc/testsuite/g++.old-deja/g++.law/operators32.C
index 20d148dd544..9e1a35664f2 100644
--- a/gcc/testsuite/g++.old-deja/g++.law/operators32.C
+++ b/gcc/testsuite/g++.old-deja/g++.law/operators32.C
@@ -7,7 +7,7 @@
 //
 
 template <class T>
-void ffree(long rows, T** array) // { dg-message "note" }
+void ffree(long rows, T** array)
 {
 for( long i = 0; i < rows; i++ )
   delete [] array[i];                   // delete row
@@ -21,7 +21,7 @@ return array = new T[size];
 }
 
 template <class T>
-T** allocate2d(long d1, long d2, T**& array) // { dg-message "note" }
+T** allocate2d(long d1, long d2, T**& array)
 {
 if( allocate1d(d1, array) != 0 )
   {
@@ -49,9 +49,7 @@ foo() {std::cout << "foo created" << std::endl; }
 };
 
 foo **f2;
-allocate2d(d1, d2, f2);// { dg-error "" }  type.*// ERROR -    trying to.*
-// { dg-message "candidate" "candidate note" { target *-*-* } 52 }
-ffree(d1, f2);// { dg-error "" }  type.*// ERROR -    trying to.*
-// { dg-message "candidate" "candidate note" { target *-*-* } 54 }
+allocate2d(d1, d2, f2);// { dg-error "" "" { target c++98 } }
+ffree(d1, f2);// { dg-error "" "" { target c++98 } }
 
 }
diff --git a/gcc/testsuite/g++.old-deja/g++.other/anon9.C b/gcc/testsuite/g++.old-deja/g++.other/anon9.C
index a364db8e962..d458b6b4309 100644
--- a/gcc/testsuite/g++.old-deja/g++.other/anon9.C
+++ b/gcc/testsuite/g++.old-deja/g++.other/anon9.C
@@ -1,4 +1,4 @@
-// { dg-do assemble  }
+// { dg-do assemble { target c++98 } }
 // Test that we properly diagnose an attempt to use an anonymous class
 // in declaring an external function.
 
diff --git a/gcc/testsuite/g++.old-deja/g++.other/linkage1.C b/gcc/testsuite/g++.old-deja/g++.other/linkage1.C
index 556ef9716a8..2fa2dec04b7 100644
--- a/gcc/testsuite/g++.old-deja/g++.other/linkage1.C
+++ b/gcc/testsuite/g++.old-deja/g++.other/linkage1.C
@@ -1,4 +1,4 @@
-// { dg-do assemble  }
+// { dg-do assemble { target c++98 } }
 typedef struct {
   int i;
 } *p;
diff --git a/gcc/testsuite/g++.old-deja/g++.other/linkage2.C b/gcc/testsuite/g++.old-deja/g++.other/linkage2.C
index 2385b2216fe..974cd639668 100644
--- a/gcc/testsuite/g++.old-deja/g++.other/linkage2.C
+++ b/gcc/testsuite/g++.old-deja/g++.other/linkage2.C
@@ -1,4 +1,4 @@
-// { dg-do assemble  }
+// { dg-do assemble { target c++98 } }
 // From: Klaus-Georg Adams <Klaus-Georg.Adams@chemie.uni-karlsruhe.de>    
 extern "C" 
 {
diff --git a/gcc/testsuite/g++.old-deja/g++.pt/enum6.C b/gcc/testsuite/g++.old-deja/g++.pt/enum6.C
index 254b48bc7fc..48bdbb0ca52 100644
--- a/gcc/testsuite/g++.old-deja/g++.pt/enum6.C
+++ b/gcc/testsuite/g++.old-deja/g++.pt/enum6.C
@@ -8,7 +8,7 @@ void fn(T)
 {
   enum tern { H, L, X, U };
 
-  vector<tern> ternvec; // { dg-error "" } composed from a local type
+  vector<tern> ternvec; // { dg-error "" "" { target c++98 } } composed from a local type
 }
 
 template void fn(int);
diff --git a/gcc/testsuite/g++.old-deja/g++.pt/explicit70.C b/gcc/testsuite/g++.old-deja/g++.pt/explicit70.C
index dc9c6c945d6..1f53a757cb8 100644
--- a/gcc/testsuite/g++.old-deja/g++.pt/explicit70.C
+++ b/gcc/testsuite/g++.old-deja/g++.pt/explicit70.C
@@ -18,7 +18,7 @@ template int S<int>::t; // { dg-error "duplicate explicit instantiation" }
 template class S<double>;
 template class S<double>; // { dg-error "duplicate explicit instantiation" } 
 
-extern template void f(double); // { dg-error "extern" } extern not allowed
+extern template void f(double); // { dg-error "extern" "" { target c++98 } }
 inline template class S<float>; // { dg-error "inline" } inline not allowed
 
 template <class T>
diff --git a/gcc/testsuite/g++.old-deja/g++.pt/ptrmem6.C b/gcc/testsuite/g++.old-deja/g++.pt/ptrmem6.C
index 8802e983b67..19f1591cf62 100644
--- a/gcc/testsuite/g++.old-deja/g++.pt/ptrmem6.C
+++ b/gcc/testsuite/g++.old-deja/g++.pt/ptrmem6.C
@@ -13,30 +13,22 @@ public:
 };
 
 template <void (A::*)() >
-void g() {}			// { dg-message "void g" }
+void g() {}
 template <int A::*>
-void h() {}			// { dg-message "void h" }
+void h() {}
 
 
 int main() {
   g<&A::f>();
   h<&A::i>();
   g<&B::f>(); // { dg-error "" } 
-  // { dg-message "candidate" "candidate note" { target *-*-* } 24 }
   h<&B::j>(); // { dg-error "" } 
-  // { dg-message "candidate" "candidate note" { target *-*-* } 26 }
-  g<(void (A::*)()) &A::f>(); // { dg-error "" } 
-  // { dg-message "candidate" "candidate note" { target *-*-* } 28 }
-  h<(int A::*) &A::i>(); // { dg-error "" } 
-  // { dg-message "candidate" "candidate note" { target *-*-* } 30 }
+  g<(void (A::*)()) &A::f>(); // { dg-error "" "" { xfail c++11 } }
+  h<(int A::*) &A::i>(); // { dg-error "" "" { xfail c++11 } }
   g<(void (A::*)()) &B::f>(); // { dg-error "" } 
-  // { dg-message "candidate" "candidate note" { target *-*-* } 32 }
   h<(int A::*) &B::j>(); // { dg-error "" } 
-  // { dg-message "candidate" "candidate note" { target *-*-* } 34 }
-  g<(void (A::*)()) 0>(); // { dg-error "" } 
-  // { dg-message "candidate" "candidate note" { target *-*-* } 36 }
-  h<(int A::*) 0>(); // { dg-error "" } 
-  // { dg-message "candidate" "candidate note" { target *-*-* } 38 }
+  g<(void (A::*)()) 0>(); // { dg-error "" "" { target c++98 } }
+  h<(int A::*) 0>(); // { dg-error "" "" { target c++98 } }
 
   return 0;
 }
diff --git a/gcc/testsuite/g++.old-deja/g++.pt/t29.C b/gcc/testsuite/g++.old-deja/g++.pt/t29.C
index bcc94a38726..f664f5402ba 100644
--- a/gcc/testsuite/g++.old-deja/g++.pt/t29.C
+++ b/gcc/testsuite/g++.old-deja/g++.pt/t29.C
@@ -1,4 +1,4 @@
-// { dg-do assemble  }
+// { dg-do assemble { target c++98 } }
 
 template <class X, int n> X f (auto X (*x)[n]) { return (*x)[n/2]; }
 extern int i[30];
diff --git a/gcc/testsuite/g++.old-deja/g++.pt/t30.C b/gcc/testsuite/g++.old-deja/g++.pt/t30.C
index 45da04c63ad..b0c4f2fbde4 100644
--- a/gcc/testsuite/g++.old-deja/g++.pt/t30.C
+++ b/gcc/testsuite/g++.old-deja/g++.pt/t30.C
@@ -1,4 +1,4 @@
-// { dg-do assemble  }
+// { dg-do assemble { target c++98 } }
 
 template <class X, int n> X f (auto X (*x)[n]) { return (*x)[n/2]; }
 extern int i[30], i2[33];
diff --git a/gcc/testsuite/g++.old-deja/old-deja.exp b/gcc/testsuite/g++.old-deja/old-deja.exp
index ce53b5fe486..c941f40f73a 100644
--- a/gcc/testsuite/g++.old-deja/old-deja.exp
+++ b/gcc/testsuite/g++.old-deja/old-deja.exp
@@ -21,7 +21,7 @@ load_lib g++-dg.exp
 # If a testcase doesn't have special options, use these.
 global DEFAULT_CXXFLAGS
 if ![info exists DEFAULT_CXXFLAGS] then {
-    set DEFAULT_CXXFLAGS " -ansi -pedantic-errors -Wno-long-long"
+    set DEFAULT_CXXFLAGS " -pedantic-errors -Wno-long-long"
 }
 
 # Initialize `dg'.
@@ -32,7 +32,7 @@ dg-init
 set tests [lsort [find $srcdir/$subdir *.C]]
 
 # Main loop.
-dg-runtest $tests "" $DEFAULT_CXXFLAGS
+g++-dg-runtest $tests $DEFAULT_CXXFLAGS
 
 # All done.
 dg-finish
diff --git a/gcc/testsuite/lib/g++-dg.exp b/gcc/testsuite/lib/g++-dg.exp
index ec81d03718a..e6ef74b5ef4 100644
--- a/gcc/testsuite/lib/g++-dg.exp
+++ b/gcc/testsuite/lib/g++-dg.exp
@@ -26,3 +26,36 @@ proc g++-dg-test { prog do_what extra_tool_flags } {
 proc g++-dg-prune { system text } {
     return [gcc-dg-prune $system $text]
 }
+
+# Modified dg-runtest that runs tests in both C++98 and C++11 modes
+# unless they specifically specify one or the other.
+proc g++-dg-runtest { testcases default-extra-flags } {
+    global runtests
+
+    foreach test $testcases {
+	# If we're only testing specific files and this isn't one of them, skip it.
+	if ![runtest_file_p $runtests $test] {
+	    continue
+	}
+
+	# If the testcase specifies a standard, use that one.
+	# If not, run it under both standards, allowing GNU extensions
+	# if there's a dg-options line.
+	if ![search_for $test "-std=*++"] {
+	    if [search_for $test "dg-options"] {
+		set option_list { -std=gnu++98 -std=gnu++11 }
+	    } else {
+		set option_list { -std=c++98 -std=c++11 }
+	    }
+	} else {
+	    set option_list { "" }
+	}
+
+	set nshort [file tail [file dirname $test]]/[file tail $test]
+
+	foreach flags $option_list {
+	    verbose "Testing $nshort, $flags" 1
+	    dg-test $test $flags ${default-extra-flags}
+	}
+    }
+}
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 61bae45c1f8..944a66853a2 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -4266,6 +4266,24 @@ proc check_effective_target_c++ { } {
  return 0
 }
 
+# Check which language standard is active by checking for the presence of
+# one of the C++11 -std flags.  This assumes that the default for the
+# compiler is C++98, and that there will never be multiple -std= arguments
+# on the command line.
+proc check_effective_target_c++11 { } {
+    if ![check_effective_target_c++] {
+	return 0
+    }
+    return [check-flags { { } { } { -std=c++0x -std=gnu++0x -std=c++11 -std=gnu++11 } }]
+}
+
+proc check_effective_target_c++98 { } {
+    if ![check_effective_target_c++] {
+	return 0
+    }
+    return [check-flags { { } { } { } { -std=c++0x -std=gnu++0x -std=c++11 -std=gnu++11 } }]
+}
+
 # Return 1 if expensive testcases should be run.
 
 proc check_effective_target_run_expensive_tests { } {