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libstdc++: operator new/delete are transaction_safe

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With the changes to #pragma system_header, g++.dg/tm/pr46270.C was
failing because <new> didn't implement the N4514 change to [new.delete] that
says "The library versions of the global allocation and deallocation
functions are declared transaction_safe (8.3.5 dcl.fct)."  We already have
the _GLIBCXX_TXN_SAFE macro, just need to add it.

libstdc++-v3/ChangeLog:

	* libsupc++/new: Add _GLIBCXX_TXN_SAFE.
This commit is contained in:
Jason Merrill 2024-09-09 11:20:02 -04:00
parent 2b7971448f
commit 2620e3727d
1 changed files with 38 additions and 18 deletions
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56
libstdc++-v3/libsupc++/new
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@ -132,49 +132,63 @@ namespace std
* Placement new and delete signatures (take a memory address argument,
* does nothing) may not be replaced by a user's program.
*/
_GLIBCXX_NODISCARD void* operator new(std::size_t) _GLIBCXX_THROW (std::bad_alloc)
_GLIBCXX_NODISCARD void* operator new(std::size_t)
_GLIBCXX_TXN_SAFE _GLIBCXX_THROW (std::bad_alloc)
__attribute__((__externally_visible__));
_GLIBCXX_NODISCARD void* operator new[](std::size_t) _GLIBCXX_THROW (std::bad_alloc)
_GLIBCXX_NODISCARD void* operator new[](std::size_t)
_GLIBCXX_TXN_SAFE _GLIBCXX_THROW (std::bad_alloc)
__attribute__((__externally_visible__));
void operator delete(void*) _GLIBCXX_USE_NOEXCEPT
void operator delete(void*) _GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
__attribute__((__externally_visible__));
void operator delete[](void*) _GLIBCXX_USE_NOEXCEPT
void operator delete[](void*) _GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
__attribute__((__externally_visible__));
#if __cpp_sized_deallocation
void operator delete(void*, std::size_t) _GLIBCXX_USE_NOEXCEPT
void operator delete(void*, std::size_t)
_GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
__attribute__((__externally_visible__));
void operator delete[](void*, std::size_t) _GLIBCXX_USE_NOEXCEPT
void operator delete[](void*, std::size_t)
_GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
__attribute__((__externally_visible__));
#endif
_GLIBCXX_NODISCARD void* operator new(std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
_GLIBCXX_NODISCARD void* operator new(std::size_t, const std::nothrow_t&)
_GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
__attribute__((__externally_visible__, __alloc_size__ (1), __malloc__));
_GLIBCXX_NODISCARD void* operator new[](std::size_t, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
_GLIBCXX_NODISCARD void* operator new[](std::size_t, const std::nothrow_t&)
_GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
__attribute__((__externally_visible__, __alloc_size__ (1), __malloc__));
void operator delete(void*, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
void operator delete(void*, const std::nothrow_t&)
_GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
__attribute__((__externally_visible__));
void operator delete[](void*, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
void operator delete[](void*, const std::nothrow_t&)
_GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
__attribute__((__externally_visible__));
#if __cpp_aligned_new
_GLIBCXX_NODISCARD void* operator new(std::size_t, std::align_val_t)
_GLIBCXX_TXN_SAFE
__attribute__((__externally_visible__, __alloc_size__ (1), __malloc__));
_GLIBCXX_NODISCARD void* operator new(std::size_t, std::align_val_t, const std::nothrow_t&)
_GLIBCXX_TXN_SAFE
_GLIBCXX_USE_NOEXCEPT __attribute__((__externally_visible__, __alloc_size__ (1), __malloc__));
void operator delete(void*, std::align_val_t)
void operator delete(void*, std::align_val_t) _GLIBCXX_TXN_SAFE
_GLIBCXX_USE_NOEXCEPT __attribute__((__externally_visible__));
void operator delete(void*, std::align_val_t, const std::nothrow_t&)
_GLIBCXX_TXN_SAFE
_GLIBCXX_USE_NOEXCEPT __attribute__((__externally_visible__));
_GLIBCXX_NODISCARD void* operator new[](std::size_t, std::align_val_t)
_GLIBCXX_TXN_SAFE
__attribute__((__externally_visible__, __alloc_size__ (1), __malloc__));
_GLIBCXX_NODISCARD void* operator new[](std::size_t, std::align_val_t, const std::nothrow_t&)
_GLIBCXX_TXN_SAFE
_GLIBCXX_USE_NOEXCEPT __attribute__((__externally_visible__, __alloc_size__ (1), __malloc__));
void operator delete[](void*, std::align_val_t)
void operator delete[](void*, std::align_val_t) _GLIBCXX_TXN_SAFE
_GLIBCXX_USE_NOEXCEPT __attribute__((__externally_visible__));
void operator delete[](void*, std::align_val_t, const std::nothrow_t&)
_GLIBCXX_TXN_SAFE
_GLIBCXX_USE_NOEXCEPT __attribute__((__externally_visible__));
#if __cpp_sized_deallocation
void operator delete(void*, std::size_t, std::align_val_t)
void operator delete(void*, std::size_t, std::align_val_t) _GLIBCXX_TXN_SAFE
_GLIBCXX_USE_NOEXCEPT __attribute__((__externally_visible__));
void operator delete[](void*, std::size_t, std::align_val_t)
void operator delete[](void*, std::size_t, std::align_val_t) _GLIBCXX_TXN_SAFE
_GLIBCXX_USE_NOEXCEPT __attribute__((__externally_visible__));
#endif // __cpp_sized_deallocation
#endif // __cpp_aligned_new
@ -187,17 +201,23 @@ void operator delete[](void*, std::size_t, std::align_val_t)
// Default placement versions of operator new.
_GLIBCXX_NODISCARD _GLIBCXX_PLACEMENT_CONSTEXPR
void* operator new(std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
void* operator new(std::size_t, void* __p)
_GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
{ return __p; }
_GLIBCXX_NODISCARD _GLIBCXX_PLACEMENT_CONSTEXPR
void* operator new[](std::size_t, void* __p) _GLIBCXX_USE_NOEXCEPT
void* operator new[](std::size_t, void* __p)
_GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
{ return __p; }
#undef _GLIBCXX_PLACEMENT_CONSTEXPR
// Default placement versions of operator delete.
inline void operator delete (void*, void*) _GLIBCXX_USE_NOEXCEPT { }
inline void operator delete[](void*, void*) _GLIBCXX_USE_NOEXCEPT { }
inline void operator delete (void*, void*)
_GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
{ }
inline void operator delete[](void*, void*)
_GLIBCXX_TXN_SAFE _GLIBCXX_USE_NOEXCEPT
{ }
//@}
} // extern "C++"