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| author | Jonathan Wakely <jwakely@redhat.com> | 2023-04-18 14:37:38 +0100 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2023-04-18 16:42:25 +0100 |
| commit | b7c54e3f48086c29179f7765a35c381de5109a0a (patch) | |
| tree | 9c151bfd5f788f2f3115dc42668993f25f2f6c1b /gcc/system.h | |
| parent | 14c1a8dfa3eaea283ab467c2aa3a62a25d3b49cb (diff) | |
| download | gcc-b7c54e3f48086c29179f7765a35c381de5109a0a.zip gcc-b7c54e3f48086c29179f7765a35c381de5109a0a.tar.gz gcc-b7c54e3f48086c29179f7765a35c381de5109a0a.tar.bz2 | |
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.
Diffstat (limited to 'gcc/system.h')
0 files changed, 0 insertions, 0 deletions