diff --git a/libstdc++-v3/config/abi/pre/gnu.ver b/libstdc++-v3/config/abi/pre/gnu.ver index 8f3c7b3827e..b747351a1b9 100644 --- a/libstdc++-v3/config/abi/pre/gnu.ver +++ b/libstdc++-v3/config/abi/pre/gnu.ver @@ -1285,7 +1285,6 @@ GLIBCXX_3.4.11 { # condition_variable _ZNSt18condition_variable10notify_allEv; _ZNSt18condition_variable10notify_oneEv; - _ZNSt18condition_variable4waitERSt11unique_lockISt5mutexE; _ZNSt18condition_variableC1Ev; _ZNSt18condition_variableC2Ev; _ZNSt18condition_variableD1Ev; @@ -1295,6 +1294,12 @@ GLIBCXX_3.4.11 { _ZNSt22condition_variable_anyD1Ev; _ZNSt22condition_variable_anyD2Ev; +#ifndef HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT + # The original definition of this symbol gets versioned as @GLIBCXX_3.4.11 + # if ".symver" is supported, or as @@GLIBCXX_3.4.11 otherwise. + _ZNSt18condition_variable4waitERSt11unique_lockISt5mutexE; +#endif + # thread _ZNSt6thread4joinEv; _ZNSt6thread6detachEv; @@ -2401,6 +2406,11 @@ GLIBCXX_3.4.30 { _ZSt21__glibcxx_assert_fail*; +#ifdef HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT + # The new definition of this symbol gets versioned as @@GLIBCXX_3.4.30 + _ZNSt18condition_variable4waitERSt11unique_lockISt5mutexE; +#endif + } GLIBCXX_3.4.29; # Symbols in the support library (libsupc++) have their own tag. diff --git a/libstdc++-v3/doc/xml/manual/evolution.xml b/libstdc++-v3/doc/xml/manual/evolution.xml index 271d2225c3a..fd08cd84d20 100644 --- a/libstdc++-v3/doc/xml/manual/evolution.xml +++ b/libstdc++-v3/doc/xml/manual/evolution.xml @@ -1038,6 +1038,13 @@ The bitmap, mt, and pool--enable-libstdcxx-allocator were removed. + +std::condition_variable::wait changed to be +noexcept(false) to allow thread cancellation exceptions to +be thrown from pthread_cond_wait without aborting +the process. + + diff --git a/libstdc++-v3/src/c++11/compatibility-condvar.cc b/libstdc++-v3/src/c++11/compatibility-condvar.cc index 575d78055cb..439f1844e2c 100644 --- a/libstdc++-v3/src/c++11/compatibility-condvar.cc +++ b/libstdc++-v3/src/c++11/compatibility-condvar.cc @@ -54,4 +54,36 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION _GLIBCXX_END_NAMESPACE_VERSION } // namespace std +#if ! _GLIBCXX_INLINE_VERSION +// XXX GLIBCXX_ABI Deprecated +// gcc-12.1 +// std::condition_variable::wait changed to noexcept(false) +#if defined(_GLIBCXX_SYMVER_GNU) && defined(_GLIBCXX_SHARED) \ + && defined(_GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE) \ + && defined(_GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT) +namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) +{ +struct __nothrow_wait_cv : std::condition_variable +{ + void wait(std::unique_lock&) noexcept; +}; + +__attribute__((used)) +void +__nothrow_wait_cv::wait(std::unique_lock& lock) noexcept +{ + this->condition_variable::wait(lock); +} +} // namespace __gnu_cxx + +// Export a noexcept wrapper around std::condition_variable::wait +// with the original @GLIBCXX_3.4.11 symbol version. +asm( + ".symver _ZN9__gnu_cxx17__nothrow_wait_cv4waitERSt11unique_lockISt5mutexE," + "_ZNSt18condition_variable4waitERSt11unique_lockISt5mutexE@GLIBCXX_3.4.11," + "local" +); +#endif +#endif + #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1