9e18a25331
std::condition_variable::wait(unique_lock<mutex>&) is incorrectly marked noexcept, which means that the __forced_unwind exception used by NPTL cancellation will terminate the process. It should allow exceptions to pass through, so that a thread can be cleanly cancelled when waiting on a condition variable. The new behaviour is exported as a new version of the symbol, to avoid an ABI break for existing code linked to the non-throwing definition of the function. Code linked against older releases will have a reference to the @GLIBCXX_3.4.11 version, andcode compiled against the new libstdc++ will get a reference to the @@GLIBCXX_3.4.30 version. libstdc++-v3/ChangeLog: PR libstdc++/103382 * config/abi/pre/gnu.ver (GLIBCXX_3.4.11): Do not export old symbol if .symver renaming is supported. (GLIBCXX_3.4.30): Export new symbol if .symver renaming is supported. * doc/xml/manual/evolution.xml: Document change. * doc/html/manual/api.html: Regenerate. * include/bits/std_mutex.h (__condvar::wait, __condvar::wait_until): Remove noexcept. * include/std/condition_variable (condition_variable::wait): Likewise. * src/c++11/condition_variable.cc (condition_variable::wait): Likewise. * src/c++11/compatibility-condvar.cc (__nothrow_wait_cv::wait): Define nothrow wrapper around std::condition_variable::wait and export the old symbol as an alias to it. * testsuite/30_threads/condition_variable/members/103382.cc: New test. |
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| config | ||
| doc | ||
| include | ||
| libsupc++ | ||
| po | ||
| python | ||
| scripts | ||
| src | ||
| testsuite | ||
| acinclude.m4 | ||
| aclocal.m4 | ||
| ChangeLog | ||
| ChangeLog-1998 | ||
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| ChangeLog-2020 | ||
| config.h.in | ||
| configure | ||
| configure.ac | ||
| configure.host | ||
| crossconfig.m4 | ||
| fragment.am | ||
| linkage.m4 | ||
| Makefile.am | ||
| Makefile.in | ||
| README | ||
file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.