1f53367fb5
LWG recently decided it should be ill-formed to instantiate std::future and std::shared_future for types that can't be returned from a function. This adds static assertions to enforce it (std::future already failed, but this makes the error more understandable). LWG 3466 extends that to std::promise. The actual constraint is that t.~T() is well-formed for the primary template, but rejecting arrays and functions as done for futures matches that condition. libstdc++-v3/ChangeLog: * include/std/future (future, shared_future, promise): Add static assertions to the primary template to reject array and function types. * testsuite/30_threads/future/requirements/lwg3458.cc: New test. * testsuite/30_threads/promise/requirements/lwg3466.cc: New test. * testsuite/30_threads/shared_future/requirements/lwg3458.cc: New test. |
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| .. | ||
| 17_intro | ||
| 18_support | ||
| 19_diagnostics | ||
| 20_util | ||
| 21_strings | ||
| 22_locale | ||
| 23_containers | ||
| 24_iterators | ||
| 25_algorithms | ||
| 26_numerics | ||
| 27_io | ||
| 28_regex | ||
| 29_atomics | ||
| 30_threads | ||
| abi | ||
| backward | ||
| config | ||
| data | ||
| decimal | ||
| experimental | ||
| ext | ||
| lib | ||
| libstdc++-abi | ||
| libstdc++-dg | ||
| libstdc++-prettyprinters | ||
| libstdc++-xmethods | ||
| performance | ||
| special_functions | ||
| std | ||
| tr1 | ||
| tr2 | ||
| util | ||
| Makefile.am | ||
| Makefile.in | ||