25999a112f
The restrictions forbidding arithmetic on atomic pointer types are only enabled for C++17 and later, retaining the GNU extension for older standards. The new nested typedefs and changes to prevent scalar parameters participating in template argument deduction are enabled unconditionally. PR libstdc++/69769 PR libstdc++/85886 * include/bits/atomic_base.h (__atomic_base::value_type) (__atomic_base::difference_type): Add new typedefs. * include/std/atomic (atomic<bool>::value_type, atomic<T>::value_type) (atomic<T*>::value_type, atomic<T*>::difference_type): Likewise. (atomic<T*>::operator++, atomic<T*>::operator--) (atomic<T*>::operator+=, atomic<T*>::operator-=) (atomic<T*>::fetch_add, atomic<T*>::fetch_sub): Add static assertion to enforce C++17 requirement on pointer arithmetic. (__atomic_val_t, __atomic_diff_t): New alias templates. (atomic_init, atomic_store_explicit, atomic_exchange_explicit) (atomic_compare_exchange_weak_explicit) (atomic_compare_exchange_strong_explicit, atomic_store) (atomic_exchange, atomic_compare_exchange_weak) (atomic_compare_exchange_strong): Use __atomic_val_t to make scalar parameters be non-deduced contexts. (atomic_fetch_add_explicit, atomic_fetch_sub_explicit) (atomic_fetch_add, atomic_fetch_sub): Change first parameter to be atomic instead of __atomic_base, and use __atomic_diff_t for scalar parameters. (atomic_fetch_and_explicit, atomic_fetch_or_explicit) (atomic_fetch_xor_explicit, atomic_fetch_and, atomic_fetch_or) (atomic_fetch_xor): Use __atomic_val_t for scalar parameters. (atomic_fetch_add_explicit, atomic_fetch_sub_explicit) (atomic_fetch_add, atomic_fetch_sub): Remove overloads for atomic address types. * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error lineno. * testsuite/29_atomics/atomic/69769.cc: New test. * testsuite/29_atomics/atomic/nonmembers.cc: New test. * testsuite/29_atomics/atomic/operators/pointer_partial_void.cc: Disable test for C++17 and later. * testsuite/29_atomics/atomic/requirements/typedefs.cc: New test. * testsuite/29_atomics/atomic_integral/nonmembers.cc: New test. * testsuite/29_atomics/atomic_integral/requirements/typedefs.cc: New test. From-SVN: r260676 |
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| include | ||
| libsupc++ | ||
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| src | ||
| testsuite | ||
| acinclude.m4 | ||
| aclocal.m4 | ||
| ChangeLog | ||
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| ChangeLog-2017 | ||
| 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.