libstdc++: Export global iostreams with GLIBCXX_3.4.31 symver [PR108969]

Since GCC 13 the global iostream objects are only initialized once in
libstdc++, and not by a std::ios::Init object in every translation unit
that includes <iostream>. To avoid using uninitialized streams defined
in an older libstdc++.so, translation units using the global iostreams
should depend on the GLIBCXX_3.4.31 symver.

Define std::cin as std::__io::cin and then export it as
std::cin@@GLIBCXX_3.4.31 so that references to std::cin bind to the new
symver. Also export it as @GLIBCXX_3.4 for backwards compatibility

libstdc++-v3/ChangeLog:

	PR libstdc++/108969
	* src/Makefile.am: Move globals_io.cc to here.
	* src/Makefile.in: Regenerate.
	* src/c++98/Makefile.am: Remove globals_io.cc from here.
	* src/c++98/Makefile.in: Regenerate.
	* src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
	symbol name and then export with GLIBCXX_3.4.31 symver.
	(cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
	* config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
	Regenerate.
	* config/abi/post/i486-linux-gnu/baseline_symbols.txt:
	Regenerate.
	* config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
	Regenerate.
	* config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
	Regenerate.
	* config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
	Regenerate.
	* config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
	Regenerate.
	* config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
	Regenerate.
	* config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
	Regenerate.
	* config/abi/pre/gnu.ver: Add iostream objects to new symver.

14 files changed, 176 insertions, 83 deletions

diff --git a/libstdc++-v3/config/abi/post/aarch64-linux-gnu/baseline_symbols.txt b/libstdc++-v3/config/abi/post/aarch64-linux-gnu/baseline_symbols.txt
index 9be3453d6ed..d2cf0d41ab5 100644
--- a/libstdc++-v3/config/abi/post/aarch64-linux-gnu/baseline_symbols.txt
+++ b/libstdc++-v3/config/abi/post/aarch64-linux-gnu/baseline_symbols.txt
@@ -5258,15 +5258,23 @@ OBJECT:25:_ZTSNSt7__cxx118numpunctIcEE@@GLIBCXX_3.4.21
 OBJECT:25:_ZTSNSt7__cxx118numpunctIwEE@@GLIBCXX_3.4.21
 OBJECT:25:_ZTSSt20bad_array_new_length@@CXXABI_1.3.8
 OBJECT:26:_ZTSNSt3pmr15memory_resourceE@@GLIBCXX_3.4.28
-OBJECT:272:_ZSt4cerr@@GLIBCXX_3.4
-OBJECT:272:_ZSt4clog@@GLIBCXX_3.4
-OBJECT:272:_ZSt4cout@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wcerr@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wclog@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wcout@@GLIBCXX_3.4
+OBJECT:272:_ZSt4cerr@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4cerr@GLIBCXX_3.4
+OBJECT:272:_ZSt4clog@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4clog@GLIBCXX_3.4
+OBJECT:272:_ZSt4cout@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4cout@GLIBCXX_3.4
+OBJECT:272:_ZSt5wcerr@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wcerr@GLIBCXX_3.4
+OBJECT:272:_ZSt5wclog@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wclog@GLIBCXX_3.4
+OBJECT:272:_ZSt5wcout@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wcout@GLIBCXX_3.4
 OBJECT:27:_ZTSSt19__codecvt_utf8_baseIwE@@GLIBCXX_3.4.21
-OBJECT:280:_ZSt3cin@@GLIBCXX_3.4
-OBJECT:280:_ZSt4wcin@@GLIBCXX_3.4
+OBJECT:280:_ZSt3cin@@GLIBCXX_3.4.31
+OBJECT:280:_ZSt3cin@GLIBCXX_3.4
+OBJECT:280:_ZSt4wcin@@GLIBCXX_3.4.31
+OBJECT:280:_ZSt4wcin@GLIBCXX_3.4
 OBJECT:28:_ZTSSt19__codecvt_utf8_baseIDiE@@GLIBCXX_3.4.21
 OBJECT:28:_ZTSSt19__codecvt_utf8_baseIDsE@@GLIBCXX_3.4.21
 OBJECT:28:_ZTSSt20__codecvt_utf16_baseIwE@@GLIBCXX_3.4.21
diff --git a/libstdc++-v3/config/abi/post/i486-linux-gnu/baseline_symbols.txt b/libstdc++-v3/config/abi/post/i486-linux-gnu/baseline_symbols.txt
index ed8966b9c7b..35436370a58 100644
--- a/libstdc++-v3/config/abi/post/i486-linux-gnu/baseline_symbols.txt
+++ b/libstdc++-v3/config/abi/post/i486-linux-gnu/baseline_symbols.txt
@@ -4769,14 +4769,22 @@ OBJECT:13:_ZTSSt9exception@@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9strstream@@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9time_base@@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9type_info@@GLIBCXX_3.4
-OBJECT:140:_ZSt4cerr@@GLIBCXX_3.4
-OBJECT:140:_ZSt4clog@@GLIBCXX_3.4
-OBJECT:140:_ZSt4cout@@GLIBCXX_3.4
-OBJECT:144:_ZSt3cin@@GLIBCXX_3.4
-OBJECT:144:_ZSt5wcerr@@GLIBCXX_3.4
-OBJECT:144:_ZSt5wclog@@GLIBCXX_3.4
-OBJECT:144:_ZSt5wcout@@GLIBCXX_3.4
-OBJECT:148:_ZSt4wcin@@GLIBCXX_3.4
+OBJECT:140:_ZSt4cerr@@GLIBCXX_3.4.31
+OBJECT:140:_ZSt4cerr@GLIBCXX_3.4
+OBJECT:140:_ZSt4clog@@GLIBCXX_3.4.31
+OBJECT:140:_ZSt4clog@GLIBCXX_3.4
+OBJECT:140:_ZSt4cout@@GLIBCXX_3.4.31
+OBJECT:140:_ZSt4cout@GLIBCXX_3.4
+OBJECT:144:_ZSt3cin@@GLIBCXX_3.4.31
+OBJECT:144:_ZSt3cin@GLIBCXX_3.4
+OBJECT:144:_ZSt5wcerr@@GLIBCXX_3.4.31
+OBJECT:144:_ZSt5wcerr@GLIBCXX_3.4
+OBJECT:144:_ZSt5wclog@@GLIBCXX_3.4.31
+OBJECT:144:_ZSt5wclog@GLIBCXX_3.4
+OBJECT:144:_ZSt5wcout@@GLIBCXX_3.4.31
+OBJECT:144:_ZSt5wcout@GLIBCXX_3.4
+OBJECT:148:_ZSt4wcin@@GLIBCXX_3.4.31
+OBJECT:148:_ZSt4wcin@GLIBCXX_3.4
 OBJECT:14:_ZTSSt7collateIcE@@GLIBCXX_3.4
 OBJECT:14:_ZTSSt7collateIwE@@GLIBCXX_3.4
 OBJECT:15:_ZTSSt10bad_typeid@@GLIBCXX_3.4
diff --git a/libstdc++-v3/config/abi/post/m68k-linux-gnu/baseline_symbols.txt b/libstdc++-v3/config/abi/post/m68k-linux-gnu/baseline_symbols.txt
index be21567821c..865a4ce7975 100644
--- a/libstdc++-v3/config/abi/post/m68k-linux-gnu/baseline_symbols.txt
+++ b/libstdc++-v3/config/abi/post/m68k-linux-gnu/baseline_symbols.txt
@@ -4759,19 +4759,27 @@ OBJECT:12:_ZTSSt5ctypeIcE@@GLIBCXX_3.4
 OBJECT:12:_ZTSSt5ctypeIwE@@GLIBCXX_3.4
 OBJECT:12:_ZTSSt8bad_cast@@GLIBCXX_3.4
 OBJECT:12:_ZTSSt8ios_base@@GLIBCXX_3.4
-OBJECT:138:_ZSt4cerr@@GLIBCXX_3.4
-OBJECT:138:_ZSt4clog@@GLIBCXX_3.4
-OBJECT:138:_ZSt4cout@@GLIBCXX_3.4
+OBJECT:138:_ZSt4cerr@@GLIBCXX_3.4.31
+OBJECT:138:_ZSt4cerr@GLIBCXX_3.4
+OBJECT:138:_ZSt4clog@@GLIBCXX_3.4.31
+OBJECT:138:_ZSt4clog@GLIBCXX_3.4
+OBJECT:138:_ZSt4cout@@GLIBCXX_3.4.31
+OBJECT:138:_ZSt4cout@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9bad_alloc@@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9exception@@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9strstream@@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9time_base@@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9type_info@@GLIBCXX_3.4
-OBJECT:142:_ZSt3cin@@GLIBCXX_3.4
-OBJECT:142:_ZSt5wcerr@@GLIBCXX_3.4
-OBJECT:142:_ZSt5wclog@@GLIBCXX_3.4
-OBJECT:142:_ZSt5wcout@@GLIBCXX_3.4
-OBJECT:146:_ZSt4wcin@@GLIBCXX_3.4
+OBJECT:142:_ZSt3cin@@GLIBCXX_3.4.31
+OBJECT:142:_ZSt3cin@GLIBCXX_3.4
+OBJECT:142:_ZSt5wcerr@@GLIBCXX_3.4.31
+OBJECT:142:_ZSt5wcerr@GLIBCXX_3.4
+OBJECT:142:_ZSt5wclog@@GLIBCXX_3.4.31
+OBJECT:142:_ZSt5wclog@GLIBCXX_3.4
+OBJECT:142:_ZSt5wcout@@GLIBCXX_3.4.31
+OBJECT:142:_ZSt5wcout@GLIBCXX_3.4
+OBJECT:146:_ZSt4wcin@@GLIBCXX_3.4.31
+OBJECT:146:_ZSt4wcin@GLIBCXX_3.4
 OBJECT:14:_ZTSSt7collateIcE@@GLIBCXX_3.4
 OBJECT:14:_ZTSSt7collateIwE@@GLIBCXX_3.4
 OBJECT:15:_ZTSSt10bad_typeid@@GLIBCXX_3.4
diff --git a/libstdc++-v3/config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt b/libstdc++-v3/config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt
index f4ae6d46f7e..9b4ec7120cd 100644
--- a/libstdc++-v3/config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt
+++ b/libstdc++-v3/config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt
@@ -5771,15 +5771,23 @@ OBJECT:25:_ZTSNSt7__cxx118numpunctIcEE@@GLIBCXX_3.4.21
 OBJECT:25:_ZTSNSt7__cxx118numpunctIwEE@@GLIBCXX_3.4.21
 OBJECT:25:_ZTSSt20bad_array_new_length@@CXXABI_1.3.8
 OBJECT:26:_ZTSNSt3pmr15memory_resourceE@@GLIBCXX_3.4.28
-OBJECT:272:_ZSt4cerr@@GLIBCXX_3.4
-OBJECT:272:_ZSt4clog@@GLIBCXX_3.4
-OBJECT:272:_ZSt4cout@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wcerr@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wclog@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wcout@@GLIBCXX_3.4
+OBJECT:272:_ZSt4cerr@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4cerr@GLIBCXX_3.4
+OBJECT:272:_ZSt4clog@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4clog@GLIBCXX_3.4
+OBJECT:272:_ZSt4cout@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4cout@GLIBCXX_3.4
+OBJECT:272:_ZSt5wcerr@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wcerr@GLIBCXX_3.4
+OBJECT:272:_ZSt5wclog@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wclog@GLIBCXX_3.4
+OBJECT:272:_ZSt5wcout@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wcout@GLIBCXX_3.4
 OBJECT:27:_ZTSSt19__codecvt_utf8_baseIwE@@GLIBCXX_3.4.21
-OBJECT:280:_ZSt3cin@@GLIBCXX_3.4
-OBJECT:280:_ZSt4wcin@@GLIBCXX_3.4
+OBJECT:280:_ZSt3cin@@GLIBCXX_3.4.31
+OBJECT:280:_ZSt3cin@GLIBCXX_3.4
+OBJECT:280:_ZSt4wcin@@GLIBCXX_3.4.31
+OBJECT:280:_ZSt4wcin@GLIBCXX_3.4
 OBJECT:28:_ZTSSt19__codecvt_utf8_baseIDiE@@GLIBCXX_3.4.21
 OBJECT:28:_ZTSSt19__codecvt_utf8_baseIDsE@@GLIBCXX_3.4.21
 OBJECT:28:_ZTSSt20__codecvt_utf16_baseIwE@@GLIBCXX_3.4.21
diff --git a/libstdc++-v3/config/abi/post/riscv64-linux-gnu/baseline_symbols.txt b/libstdc++-v3/config/abi/post/riscv64-linux-gnu/baseline_symbols.txt
index 876565bfa54..ca7f3666f77 100644
--- a/libstdc++-v3/config/abi/post/riscv64-linux-gnu/baseline_symbols.txt
+++ b/libstdc++-v3/config/abi/post/riscv64-linux-gnu/baseline_symbols.txt
@@ -5253,15 +5253,23 @@ OBJECT:25:_ZTSNSt7__cxx118numpunctIcEE@@GLIBCXX_3.4.21
 OBJECT:25:_ZTSNSt7__cxx118numpunctIwEE@@GLIBCXX_3.4.21
 OBJECT:25:_ZTSSt20bad_array_new_length@@CXXABI_1.3.8
 OBJECT:26:_ZTSNSt3pmr15memory_resourceE@@GLIBCXX_3.4.28
-OBJECT:272:_ZSt4cerr@@GLIBCXX_3.4
-OBJECT:272:_ZSt4clog@@GLIBCXX_3.4
-OBJECT:272:_ZSt4cout@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wcerr@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wclog@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wcout@@GLIBCXX_3.4
+OBJECT:272:_ZSt4cerr@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4cerr@GLIBCXX_3.4
+OBJECT:272:_ZSt4clog@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4clog@GLIBCXX_3.4
+OBJECT:272:_ZSt4cout@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4cout@GLIBCXX_3.4
+OBJECT:272:_ZSt5wcerr@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wcerr@GLIBCXX_3.4
+OBJECT:272:_ZSt5wclog@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wclog@GLIBCXX_3.4
+OBJECT:272:_ZSt5wcout@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wcout@GLIBCXX_3.4
 OBJECT:27:_ZTSSt19__codecvt_utf8_baseIwE@@GLIBCXX_3.4.21
-OBJECT:280:_ZSt3cin@@GLIBCXX_3.4
-OBJECT:280:_ZSt4wcin@@GLIBCXX_3.4
+OBJECT:280:_ZSt3cin@@GLIBCXX_3.4.31
+OBJECT:280:_ZSt3cin@GLIBCXX_3.4
+OBJECT:280:_ZSt4wcin@@GLIBCXX_3.4.31
+OBJECT:280:_ZSt4wcin@GLIBCXX_3.4
 OBJECT:28:_ZTSSt19__codecvt_utf8_baseIDiE@@GLIBCXX_3.4.21
 OBJECT:28:_ZTSSt19__codecvt_utf8_baseIDsE@@GLIBCXX_3.4.21
 OBJECT:28:_ZTSSt20__codecvt_utf16_baseIwE@@GLIBCXX_3.4.21
diff --git a/libstdc++-v3/config/abi/post/s390x-linux-gnu/baseline_symbols.txt b/libstdc++-v3/config/abi/post/s390x-linux-gnu/baseline_symbols.txt
index 5e532850ee1..7be951d5d5f 100644
--- a/libstdc++-v3/config/abi/post/s390x-linux-gnu/baseline_symbols.txt
+++ b/libstdc++-v3/config/abi/post/s390x-linux-gnu/baseline_symbols.txt
@@ -5534,14 +5534,22 @@ OBJECT:25:_ZTSNSt7__cxx118numpunctIcEE@@GLIBCXX_3.4.21
 OBJECT:25:_ZTSNSt7__cxx118numpunctIwEE@@GLIBCXX_3.4.21
 OBJECT:25:_ZTSSt20bad_array_new_length@@CXXABI_1.3.8
 OBJECT:26:_ZTSNSt3pmr15memory_resourceE@@GLIBCXX_3.4.28
-OBJECT:272:_ZSt4cerr@@GLIBCXX_3.4
-OBJECT:272:_ZSt4clog@@GLIBCXX_3.4
-OBJECT:272:_ZSt4cout@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wcerr@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wclog@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wcout@@GLIBCXX_3.4
-OBJECT:27:_ZTSSt19__codecvt_utf8_baseIwE@@GLIBCXX_3.4.21
-OBJECT:280:_ZSt3cin@@GLIBCXX_3.4
+OBJECT:272:_ZSt4cerr@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4cerr@GLIBCXX_3.4
+OBJECT:272:_ZSt4clog@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4clog@GLIBCXX_3.4
+OBJECT:272:_ZSt4cout@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4cout@GLIBCXX_3.4
+OBJECT:272:_ZSt5wcerr@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wcerr@GLIBCXX_3.4
+OBJECT:272:_ZSt5wclog@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wclog@GLIBCXX_3.4
+OBJECT:272:_ZSt5wcout@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wcout@GLIBCXX_3.4
+OBJECT:280:_ZSt3cin@@GLIBCXX_3.4.31
+OBJECT:280:_ZSt3cin@GLIBCXX_3.4
+OBJECT:280:_ZSt4wcin@@GLIBCXX_3.4.31
+OBJECT:280:_ZSt4wcin@GLIBCXX_3.4
 OBJECT:280:_ZSt4wcin@@GLIBCXX_3.4
 OBJECT:28:_ZTSSt19__codecvt_utf8_baseIDiE@@GLIBCXX_3.4.21
 OBJECT:28:_ZTSSt19__codecvt_utf8_baseIDsE@@GLIBCXX_3.4.21
diff --git a/libstdc++-v3/config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt b/libstdc++-v3/config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt
index ed8966b9c7b..35436370a58 100644
--- a/libstdc++-v3/config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt
+++ b/libstdc++-v3/config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt
@@ -4769,14 +4769,22 @@ OBJECT:13:_ZTSSt9exception@@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9strstream@@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9time_base@@GLIBCXX_3.4
 OBJECT:13:_ZTSSt9type_info@@GLIBCXX_3.4
-OBJECT:140:_ZSt4cerr@@GLIBCXX_3.4
-OBJECT:140:_ZSt4clog@@GLIBCXX_3.4
-OBJECT:140:_ZSt4cout@@GLIBCXX_3.4
-OBJECT:144:_ZSt3cin@@GLIBCXX_3.4
-OBJECT:144:_ZSt5wcerr@@GLIBCXX_3.4
-OBJECT:144:_ZSt5wclog@@GLIBCXX_3.4
-OBJECT:144:_ZSt5wcout@@GLIBCXX_3.4
-OBJECT:148:_ZSt4wcin@@GLIBCXX_3.4
+OBJECT:140:_ZSt4cerr@@GLIBCXX_3.4.31
+OBJECT:140:_ZSt4cerr@GLIBCXX_3.4
+OBJECT:140:_ZSt4clog@@GLIBCXX_3.4.31
+OBJECT:140:_ZSt4clog@GLIBCXX_3.4
+OBJECT:140:_ZSt4cout@@GLIBCXX_3.4.31
+OBJECT:140:_ZSt4cout@GLIBCXX_3.4
+OBJECT:144:_ZSt3cin@@GLIBCXX_3.4.31
+OBJECT:144:_ZSt3cin@GLIBCXX_3.4
+OBJECT:144:_ZSt5wcerr@@GLIBCXX_3.4.31
+OBJECT:144:_ZSt5wcerr@GLIBCXX_3.4
+OBJECT:144:_ZSt5wclog@@GLIBCXX_3.4.31
+OBJECT:144:_ZSt5wclog@GLIBCXX_3.4
+OBJECT:144:_ZSt5wcout@@GLIBCXX_3.4.31
+OBJECT:144:_ZSt5wcout@GLIBCXX_3.4
+OBJECT:148:_ZSt4wcin@@GLIBCXX_3.4.31
+OBJECT:148:_ZSt4wcin@GLIBCXX_3.4
 OBJECT:14:_ZTSSt7collateIcE@@GLIBCXX_3.4
 OBJECT:14:_ZTSSt7collateIwE@@GLIBCXX_3.4
 OBJECT:15:_ZTSSt10bad_typeid@@GLIBCXX_3.4
diff --git a/libstdc++-v3/config/abi/post/x86_64-linux-gnu/baseline_symbols.txt b/libstdc++-v3/config/abi/post/x86_64-linux-gnu/baseline_symbols.txt
index 6d48d7b7fd7..fc0d96282b0 100644
--- a/libstdc++-v3/config/abi/post/x86_64-linux-gnu/baseline_symbols.txt
+++ b/libstdc++-v3/config/abi/post/x86_64-linux-gnu/baseline_symbols.txt
@@ -5264,15 +5264,23 @@ OBJECT:25:_ZTSNSt7__cxx118numpunctIcEE@@GLIBCXX_3.4.21
 OBJECT:25:_ZTSNSt7__cxx118numpunctIwEE@@GLIBCXX_3.4.21
 OBJECT:25:_ZTSSt20bad_array_new_length@@CXXABI_1.3.8
 OBJECT:26:_ZTSNSt3pmr15memory_resourceE@@GLIBCXX_3.4.28
-OBJECT:272:_ZSt4cerr@@GLIBCXX_3.4
-OBJECT:272:_ZSt4clog@@GLIBCXX_3.4
-OBJECT:272:_ZSt4cout@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wcerr@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wclog@@GLIBCXX_3.4
-OBJECT:272:_ZSt5wcout@@GLIBCXX_3.4
+OBJECT:272:_ZSt4cerr@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4cerr@GLIBCXX_3.4
+OBJECT:272:_ZSt4clog@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4clog@GLIBCXX_3.4
+OBJECT:272:_ZSt4cout@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt4cout@GLIBCXX_3.4
+OBJECT:272:_ZSt5wcerr@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wcerr@GLIBCXX_3.4
+OBJECT:272:_ZSt5wclog@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wclog@GLIBCXX_3.4
+OBJECT:272:_ZSt5wcout@@GLIBCXX_3.4.31
+OBJECT:272:_ZSt5wcout@GLIBCXX_3.4
 OBJECT:27:_ZTSSt19__codecvt_utf8_baseIwE@@GLIBCXX_3.4.21
-OBJECT:280:_ZSt3cin@@GLIBCXX_3.4
-OBJECT:280:_ZSt4wcin@@GLIBCXX_3.4
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+OBJECT:280:_ZSt4wcin@@GLIBCXX_3.4.31
+OBJECT:280:_ZSt4wcin@GLIBCXX_3.4
 OBJECT:28:_ZTSSt19__codecvt_utf8_baseIDiE@@GLIBCXX_3.4.21
 OBJECT:28:_ZTSSt19__codecvt_utf8_baseIDsE@@GLIBCXX_3.4.21
 OBJECT:28:_ZTSSt20__codecvt_utf16_baseIwE@@GLIBCXX_3.4.21
diff --git a/libstdc++-v3/config/abi/pre/gnu.ver b/libstdc++-v3/config/abi/pre/gnu.ver
index 4ae63094eb7..7c015524b62 100644
--- a/libstdc++-v3/config/abi/pre/gnu.ver
+++ b/libstdc++-v3/config/abi/pre/gnu.ver
@@ -2512,6 +2512,20 @@ GLIBCXX_3.4.31 {
     _ZNKSt12__shared_ptrINSt10filesystem28recursive_directory_iterator10_Dir_stackELN9__gnu_cxx12_Lock_policyE[012]EEcvbEv;
     _ZNKSt12__shared_ptrINSt10filesystem7__cxx1128recursive_directory_iterator10_Dir_stackELN9__gnu_cxx12_Lock_policyE[012]EEcvbEv;
 
+#if defined(_GLIBCXX_SYMVER_GNU) && defined(_GLIBCXX_SHARED) \
+    && defined(_GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE) \
+    && defined(_GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT)
+    # See src/c++98/globals_io.cc
+    _ZSt3cin;
+    _ZSt4cout;
+    _ZSt4cerr;
+    _ZSt4clog;
+    _ZSt4wcin;
+    _ZSt5wcout;
+    _ZSt5wcerr;
+    _ZSt5wclog;
+#endif
+
 } GLIBCXX_3.4.30;
 
 # Symbols in the support library (libsupc++) have their own tag.
diff --git a/libstdc++-v3/src/Makefile.am b/libstdc++-v3/src/Makefile.am
index 5b9af41cdb9..3229f902ad7 100644
--- a/libstdc++-v3/src/Makefile.am
+++ b/libstdc++-v3/src/Makefile.am
@@ -122,6 +122,7 @@ cxx98_sources = \
 	compatibility.cc \
 	compatibility-debug_list.cc \
 	compatibility-debug_list-2.cc \
+	globals_io.cc \
 	${ldbl_compat_sources}
 
 cxx11_sources = \
diff --git a/libstdc++-v3/src/Makefile.in b/libstdc++-v3/src/Makefile.in
index f42d957af36..d145a7b4d3a 100644
--- a/libstdc++-v3/src/Makefile.in
+++ b/libstdc++-v3/src/Makefile.in
@@ -151,7 +151,7 @@ LTLIBRARIES = $(toolexeclib_LTLIBRARIES)
 am__DEPENDENCIES_1 =
 @GLIBCXX_LDBL_COMPAT_TRUE@am__objects_1 = compatibility-ldbl.lo
 am__objects_2 = compatibility.lo compatibility-debug_list.lo \
-	compatibility-debug_list-2.lo $(am__objects_1)
+	compatibility-debug_list-2.lo globals_io.lo $(am__objects_1)
 @ENABLE_SYMVERS_GNU_NAMESPACE_FALSE@am__objects_3 = compatibility-atomic-c++0x.lo \
 @ENABLE_SYMVERS_GNU_NAMESPACE_FALSE@	compatibility-c++0x.lo \
 @ENABLE_SYMVERS_GNU_NAMESPACE_FALSE@	compatibility-chrono.lo \
@@ -534,6 +534,7 @@ cxx98_sources = \
 	compatibility.cc \
 	compatibility-debug_list.cc \
 	compatibility-debug_list-2.cc \
+	globals_io.cc \
 	${ldbl_compat_sources}
 
 cxx11_sources = \
diff --git a/libstdc++-v3/src/c++98/Makefile.am b/libstdc++-v3/src/c++98/Makefile.am
index 284ffda3443..2570f90b972 100644
--- a/libstdc++-v3/src/c++98/Makefile.am
+++ b/libstdc++-v3/src/c++98/Makefile.am
@@ -118,7 +118,6 @@ sources = \
 	mt_allocator.cc \
 	codecvt.cc \
 	complex_io.cc \
-	globals_io.cc \
 	hash_tr1.cc \
 	hashtable_tr1.cc \
 	ios_failure.cc \
diff --git a/libstdc++-v3/src/c++98/Makefile.in b/libstdc++-v3/src/c++98/Makefile.in
index a100df77a6d..627ebb860cc 100644
--- a/libstdc++-v3/src/c++98/Makefile.in
+++ b/libstdc++-v3/src/c++98/Makefile.in
@@ -136,14 +136,13 @@ am__objects_5 = parallel_settings.lo
 am__objects_6 = basic_file.lo c++locale.lo $(am__objects_4) \
 	$(am__objects_5)
 am__objects_7 = bitmap_allocator.lo pool_allocator.lo mt_allocator.lo \
-	codecvt.lo complex_io.lo globals_io.lo hash_tr1.lo \
-	hashtable_tr1.lo ios_failure.lo ios_init.lo ios_locale.lo \
-	list.lo list-aux.lo list-aux-2.lo list_associated.lo \
-	list_associated-2.lo locale.lo locale_init.lo locale_facets.lo \
-	localename.lo math_stubs_float.lo math_stubs_long_double.lo \
-	stdexcept.lo strstream.lo tree.lo istream.lo istream-string.lo \
-	streambuf.lo valarray.lo $(am__objects_1) $(am__objects_3) \
-	$(am__objects_6)
+	codecvt.lo complex_io.lo hash_tr1.lo hashtable_tr1.lo \
+	ios_failure.lo ios_init.lo ios_locale.lo list.lo list-aux.lo \
+	list-aux-2.lo list_associated.lo list_associated-2.lo \
+	locale.lo locale_init.lo locale_facets.lo localename.lo \
+	math_stubs_float.lo math_stubs_long_double.lo stdexcept.lo \
+	strstream.lo tree.lo istream.lo istream-string.lo streambuf.lo \
+	valarray.lo $(am__objects_1) $(am__objects_3) $(am__objects_6)
 @GLIBCXX_HOSTED_TRUE@am_libc__98convenience_la_OBJECTS =  \
 @GLIBCXX_HOSTED_TRUE@	$(am__objects_7)
 libc__98convenience_la_OBJECTS = $(am_libc__98convenience_la_OBJECTS)
@@ -494,7 +493,6 @@ sources = \
 	mt_allocator.cc \
 	codecvt.cc \
 	complex_io.cc \
-	globals_io.cc \
 	hash_tr1.cc \
 	hashtable_tr1.cc \
 	ios_failure.cc \
diff --git a/libstdc++-v3/src/c++98/globals_io.cc b/libstdc++-v3/src/c++98/globals_io.cc
index 0c4f270977d..ba9a10377eb 100644
--- a/libstdc++-v3/src/c++98/globals_io.cc
+++ b/libstdc++-v3/src/c++98/globals_io.cc
@@ -43,6 +43,22 @@
 // In macro form:
 // _GLIBCXX_ASM_SYMVER(currentname, oldname, GLIBCXX_3.2)
 
+#if defined(_GLIBCXX_SYMVER_GNU) && defined(_GLIBCXX_SHARED) \
+    && defined(_GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE) \
+    && defined(_GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT)
+// PR libstdc++/108969
+// Define std::cin as std::__io::cin and export it as std::cin@@GLIBCXX_3.4.31
+// and also as std::cin@GLIBCXX_3.4 for backwards compatibility.
+# define _GLIBCXX_IO_GLOBAL(type, X, N) \
+  namespace __io { \
+    type X __attribute__((symver("_ZSt" #N #X "@@GLIBCXX_3.4.31"))); \
+    extern type X ## 2 __attribute__((alias("_ZNSt4__io" #N #X "E"), \
+				      symver("_ZSt" #N #X "@GLIBCXX_3.4"))); \
+  }
+#else
+# define _GLIBCXX_IO_GLOBAL(type, X, N) type X;
+#endif
+
 namespace std _GLIBCXX_VISIBILITY(default)
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
@@ -53,20 +69,20 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   __attribute__ ((aligned(__alignof__(istream))));
   typedef char fake_ostream[sizeof(ostream)]
   __attribute__ ((aligned(__alignof__(ostream))));
-  fake_istream cin;
-  fake_ostream cout;
-  fake_ostream cerr;
-  fake_ostream clog;
+  _GLIBCXX_IO_GLOBAL(fake_istream, cin, 3);
+  _GLIBCXX_IO_GLOBAL(fake_ostream, cout, 4);
+  _GLIBCXX_IO_GLOBAL(fake_ostream, cerr, 4);
+  _GLIBCXX_IO_GLOBAL(fake_ostream, clog, 4);
 
 #ifdef _GLIBCXX_USE_WCHAR_T
   typedef char fake_wistream[sizeof(wistream)]
   __attribute__ ((aligned(__alignof__(wistream))));
   typedef char fake_wostream[sizeof(wostream)]
   __attribute__ ((aligned(__alignof__(wostream))));
-  fake_wistream wcin;
-  fake_wostream wcout;
-  fake_wostream wcerr;
-  fake_wostream wclog;
+  _GLIBCXX_IO_GLOBAL(fake_wistream, wcin, 4)
+  _GLIBCXX_IO_GLOBAL(fake_wostream, wcout, 5)
+  _GLIBCXX_IO_GLOBAL(fake_wostream, wcerr, 5)
+  _GLIBCXX_IO_GLOBAL(fake_wostream, wclog, 5)
 #endif
 
 #include "ios_base_init.h"