[PATCH trivial] Fix PR71214 (__cpp_rvalue_references vs. __cpp_rvalue_reference)

[Markus Trippelsdorf]

Hi, 

as PR71214 points out gcc uses a wrong feature test macro for C++11
rvalue references: __cpp_rvalue_reference instead of the correct 
__cpp_rvalue_references.

The fix is trivial. Ok for trunk and active branches?

Thanks.

c-family/ChangeLog

        * c-cppbuiltin.c (c_cpp_builtins): Use __cpp_rvalue_references
        instead of __cpp_rvalue_reference.

diff --git a/gcc/c-family/c-cppbuiltin.c b/gcc/c-family/c-cppbuiltin.c
index 408ad4747a33..f19375a73730 100644
--- a/gcc/c-family/c-cppbuiltin.c
+++ b/gcc/c-family/c-cppbuiltin.c
@@ -847,7 +847,7 @@ c_cpp_builtins (cpp_reader *pfile)
            cpp_define (pfile, "__cpp_static_assert=200410");
          cpp_define (pfile, "__cpp_decltype=200707");
          cpp_define (pfile, "__cpp_attributes=200809");
-         cpp_define (pfile, "__cpp_rvalue_reference=200610");
+         cpp_define (pfile, "__cpp_rvalue_references=200610");
          cpp_define (pfile, "__cpp_variadic_templates=200704");
          cpp_define (pfile, "__cpp_initializer_lists=200806");
          cpp_define (pfile, "__cpp_delegating_constructors=200604");
diff --git a/gcc/testsuite/g++.dg/cpp1y/feat-cxx11.C 
b/gcc/testsuite/g++.dg/cpp1y/feat-cxx11.C
index 397b9a899573..6928d6bcbd87 100644
--- a/gcc/testsuite/g++.dg/cpp1y/feat-cxx11.C
+++ b/gcc/testsuite/g++.dg/cpp1y/feat-cxx11.C
@@ -77,10 +77,10 @@
 #  error "__cpp_attributes != 200809"
 #endif
 
-#ifndef __cpp_rvalue_reference
-#  error "__cpp_rvalue_reference"
-#elif __cpp_rvalue_reference != 200610
-#  error "__cpp_rvalue_reference != 200610"
+#ifndef __cpp_rvalue_references
+#  error "__cpp_rvalue_references"
+#elif __cpp_rvalue_references != 200610
+#  error "__cpp_rvalue_references != 200610"
 #endif
 
 #ifndef __cpp_variadic_templates
diff --git a/gcc/testsuite/g++.dg/cpp1y/feat-cxx14.C 
b/gcc/testsuite/g++.dg/cpp1y/feat-cxx14.C
index fa59f90fa892..dc30a9b3cf84 100644
--- a/gcc/testsuite/g++.dg/cpp1y/feat-cxx14.C
+++ b/gcc/testsuite/g++.dg/cpp1y/feat-cxx14.C
@@ -70,10 +70,10 @@
 #  error "__cpp_attributes != 200809"
 #endif
 
-#ifndef __cpp_rvalue_reference
-#  error "__cpp_rvalue_reference"
-#elif __cpp_rvalue_reference != 200610
-#  error "__cpp_rvalue_reference != 200610"
+#ifndef __cpp_rvalue_references
+#  error "__cpp_rvalue_references"
+#elif __cpp_rvalue_references != 200610
+#  error "__cpp_rvalue_references != 200610"
 #endif
 
 #ifndef __cpp_variadic_templates
diff --git a/gcc/testsuite/g++.dg/cpp1y/feat-cxx98-neg.C 
b/gcc/testsuite/g++.dg/cpp1y/feat-cxx98-neg.C
index 886b3d3df10e..5fbffabd1396 100644
--- a/gcc/testsuite/g++.dg/cpp1y/feat-cxx98-neg.C
+++ b/gcc/testsuite/g++.dg/cpp1y/feat-cxx98-neg.C
@@ -42,8 +42,8 @@
 #  error "__cpp_attributes" // { dg-error "error" }
 #endif
 
-#ifndef __cpp_rvalue_reference
-#  error "__cpp_rvalue_reference" // { dg-error "error" }
+#ifndef __cpp_rvalue_references
+#  error "__cpp_rvalue_references" // { dg-error "error" }
 #endif
 
 #ifndef __cpp_variadic_templates
diff --git a/gcc/testsuite/g++.dg/cpp1z/feat-cxx1z.C 
b/gcc/testsuite/g++.dg/cpp1z/feat-cxx1z.C
index f8a87a8ddc37..c7becc1cbb47 100644
--- a/gcc/testsuite/g++.dg/cpp1z/feat-cxx1z.C
+++ b/gcc/testsuite/g++.dg/cpp1z/feat-cxx1z.C
@@ -58,10 +58,10 @@
 #  error "__cpp_attributes != 200809"
 #endif
 
-#ifndef __cpp_rvalue_reference
-#  error "__cpp_rvalue_reference"
-#elif __cpp_rvalue_reference != 200610
-#  error "__cpp_rvalue_reference != 200610"
+#ifndef __cpp_rvalue_references
+#  error "__cpp_rvalue_references"
+#elif __cpp_rvalue_references != 200610
+#  error "__cpp_rvalue_references != 200610"
 #endif
 
 #ifndef __cpp_variadic_templates
-- 
Markus