libstdc++: Fix tr1 definition ambiguity in versioned namespace

	* include/tr1/cctype: Add _GLIBCXX_BEGIN_VERSION_NAMESPACE and
	_GLIBCXX_END_VERSION_NAMESPACE.
	* include/tr1/cfenv: Likewise.
	* include/tr1/cinttypes: Likewise.
	* include/tr1/cstdint: Likewise.
	* include/tr1/cstdio: Likewise.
	* include/tr1/cstdlib: Likewise.
	* include/tr1/cwchar: Likewise.
	* include/tr1/cwctype: Likewise.

From-SVN: r279272

9 files changed, 40 insertions, 0 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index e7639cdadcd..54377d89dbb 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,15 @@
 2019-12-12  François Dumont  <fdumont@gcc.gnu.org>
 
+	* include/tr1/cctype: Add _GLIBCXX_BEGIN_VERSION_NAMESPACE and
+	_GLIBCXX_END_VERSION_NAMESPACE.
+	* include/tr1/cfenv: Likewise.
+	* include/tr1/cinttypes: Likewise.
+	* include/tr1/cstdint: Likewise.
+	* include/tr1/cstdio: Likewise.
+	* include/tr1/cstdlib: Likewise.
+	* include/tr1/cwchar: Likewise.
+	* include/tr1/cwctype: Likewise.
+
 	* src/c++11/random.cc: Include <cctype>.
 	(random_devise::_M_init_pretr1): Qualify isdigit call.
 
diff --git a/libstdc++-v3/include/tr1/cctype b/libstdc++-v3/include/tr1/cctype
index ce994066188..b35cd04f0db 100644
--- a/libstdc++-v3/include/tr1/cctype
+++ b/libstdc++-v3/include/tr1/cctype
@@ -38,10 +38,14 @@
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
 namespace tr1
 {
   using ::isblank;
 }
+
+_GLIBCXX_END_NAMESPACE_VERSION
 }
 
 #endif
diff --git a/libstdc++-v3/include/tr1/cfenv b/libstdc++-v3/include/tr1/cfenv
index a058888978f..97de7542f5b 100644
--- a/libstdc++-v3/include/tr1/cfenv
+++ b/libstdc++-v3/include/tr1/cfenv
@@ -53,6 +53,8 @@
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
 namespace tr1
 {
   // types
@@ -74,6 +76,8 @@ namespace tr1
   using ::fesetenv;
   using ::feupdateenv;
 }
+
+_GLIBCXX_END_NAMESPACE_VERSION
 }
 
 #endif // _GLIBCXX_USE_C99_FENV_TR1
diff --git a/libstdc++-v3/include/tr1/cinttypes b/libstdc++-v3/include/tr1/cinttypes
index e665e188289..1c08166efdc 100644
--- a/libstdc++-v3/include/tr1/cinttypes
+++ b/libstdc++-v3/include/tr1/cinttypes
@@ -50,6 +50,8 @@
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
 namespace tr1
 {
   // types
@@ -77,6 +79,8 @@ namespace tr1
   using ::wcstoumax;
 #endif
 }
+
+_GLIBCXX_END_NAMESPACE_VERSION
 }
 
 #endif // _GLIBCXX_USE_C99_INTTYPES_TR1
diff --git a/libstdc++-v3/include/tr1/cstdint b/libstdc++-v3/include/tr1/cstdint
index 0597d19fb1b..3211a9690f8 100644
--- a/libstdc++-v3/include/tr1/cstdint
+++ b/libstdc++-v3/include/tr1/cstdint
@@ -58,6 +58,7 @@
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
 namespace tr1
 {
   using ::int8_t;
@@ -96,6 +97,7 @@ namespace tr1
   using ::uintmax_t;
   using ::uintptr_t;
 }
+_GLIBCXX_END_NAMESPACE_VERSION
 }
 
 #endif // _GLIBCXX_USE_C99_STDINT_TR1
diff --git a/libstdc++-v3/include/tr1/cstdio b/libstdc++-v3/include/tr1/cstdio
index 7d72e58b5d4..f8a9182bcaa 100644
--- a/libstdc++-v3/include/tr1/cstdio
+++ b/libstdc++-v3/include/tr1/cstdio
@@ -37,6 +37,8 @@
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
 namespace tr1
 {
   using std::snprintf;
@@ -46,6 +48,8 @@ namespace tr1
   using std::vscanf;
   using std::vsscanf;
 }
+
+_GLIBCXX_END_NAMESPACE_VERSION
 }
 
 #endif
diff --git a/libstdc++-v3/include/tr1/cstdlib b/libstdc++-v3/include/tr1/cstdlib
index a8259575ba2..0271e884436 100644
--- a/libstdc++-v3/include/tr1/cstdlib
+++ b/libstdc++-v3/include/tr1/cstdlib
@@ -39,6 +39,8 @@
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
 namespace tr1
 {
 #if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
@@ -63,6 +65,8 @@ namespace tr1
   using std::div;
 #endif
 }
+
+_GLIBCXX_END_NAMESPACE_VERSION
 }
 
 #endif // _GLIBCXX_USE_C99_STDLIB
diff --git a/libstdc++-v3/include/tr1/cwchar b/libstdc++-v3/include/tr1/cwchar
index 0d45ca79933..d2517f665f8 100644
--- a/libstdc++-v3/include/tr1/cwchar
+++ b/libstdc++-v3/include/tr1/cwchar
@@ -37,6 +37,8 @@
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
 namespace tr1
 {
 #if _GLIBCXX_HAVE_WCSTOF
@@ -58,6 +60,8 @@ namespace tr1
   using std::wcstoull;
 #endif
 }
+
+_GLIBCXX_END_NAMESPACE_VERSION
 }
 
 #endif // _GLIBCXX_USE_WCHAR_T
diff --git a/libstdc++-v3/include/tr1/cwctype b/libstdc++-v3/include/tr1/cwctype
index b5f2c2f07fc..5d343a11c6b 100644
--- a/libstdc++-v3/include/tr1/cwctype
+++ b/libstdc++-v3/include/tr1/cwctype
@@ -37,12 +37,16 @@
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
 namespace tr1
 {
 #if _GLIBCXX_HAVE_ISWBLANK
   using std::iswblank;
 #endif  
 }
+
+_GLIBCXX_END_NAMESPACE_VERSION
 }
 
 #endif // _GLIBCXX_USE_WCHAR_T