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.
This commit is contained in:
Jonathan Wakely
parent
14c1a8dfa3
commit
b7c54e3f48
14 changed files with 176 additions and 83 deletions
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@ -5258,15 +5258,23 @@ OBJECT:25:_ZTSNSt7__cxx118numpunctIcEE@@GLIBCXX_3.4.21
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@ -5771,15 +5771,23 @@ OBJECT:25:_ZTSNSt7__cxx118numpunctIcEE@@GLIBCXX_3.4.21
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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
|
||||
|
|
|
|||
|
|
@ -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.
|
||||
|
|
|
|||
|
|
@ -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 = \
|
||||
|
|
|
|||
|
|
@ -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 = \
|
||||
|
|
|
|||
|
|
@ -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 \
|
||||
|
|
|
|||
|
|
@ -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 \
|
||||
|
|
|
|||
|
|
@ -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"
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue