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Do laundered pointers destroy optimisation opportunities?

score 330 · Answer 1 · 2023-10-30T14:23:44.590000

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Do laundered pointers destroy optimisation opportunities?

330 views Asked by bitmask At 30 October 2023 at 14:23

score 2537 · Answer 2 · 2018-11-12T18:31:59.997000

Where can I find what std::launder really does?

2.5k views Asked by alfC At 12 November 2018 at 18:31

score 91 · Answer 3 · 2022-12-17T12:10:55.997000

Storage reuse Undefined behaviour

91 views Asked by getsoubl At 17 December 2022 at 12:10

score 202 · Answer 4 · 2022-03-26T20:02:58.370000

reachability with std::launder

202 views Asked by user3882729 At 26 March 2022 at 20:02

score 18921 · Answer 5 · 2021-02-12T17:51:41.383000

Why introduce `std::launder` rather than have the compiler take care of it?

18.9k views Asked by einpoklum At 12 February 2021 at 17:51

score 1210 · Answer 6 · 2018-07-27T07:17:35.250000

Can std::launder be used to convert an object pointer to its enclosing array pointer?

1.2k views Asked by geza At 27 July 2018 at 07:17

score 672 · Answer 7 · 2020-03-26T15:22:06.273000

Why is this std::launder example undefined behavior?

672 views Asked by xxhxx At 26 March 2020 at 15:22

score 428 · Answer 8 · 2020-03-29T20:06:48.527000

std::launder with inplace polymorphic containers

428 views Asked by JoaoBapt At 29 March 2020 at 20:06

score 381 · Answer 9 · 2019-10-13T20:01:44.497000

How to get float bit representation without UB in C++?

381 views Asked by Amomum At 13 October 2019 at 20:01

score 435 · Answer 10 · 2021-09-21T22:59:57.787000

Can I overwrite a const object via placement-new?

435 views Asked by Fureeish At 21 September 2021 at 22:59

score 1015 · Answer 11 · 2021-08-21T01:10:43.987000

Why is std::launder required here?

1k views Asked by Zebrafish At 21 August 2021 at 01:10

score 717 · Answer 12 · 2018-01-02T20:14:35.233000

Using std::launder to "validate" non "pointer to object" pointer value since C++17

717 views Asked by Oliv At 02 January 2018 at 20:14

score 191 · Answer 13 · 2021-03-11T11:51:21.993000

using std::launder to implement memory buffer

191 views Asked by Myrddin Krustowski At 11 March 2021 at 11:51

score 139 · Answer 14 · 2021-12-02T07:48:35.393000

Does the effect of std::launder last after the expression in which it is called?

139 views Asked by John Z. Li At 02 December 2021 at 07:48

score 303 · Answer 15 · 2021-03-24T15:14:37.357000

Is std::launder required when performing arithmetic as well?

303 views Asked by Myrddin Krustowski At 24 March 2021 at 15:14

score 2085 · Answer 16 · 2020-05-31T10:12:11.207000

std::launder use cases in C++20

2k views Asked by Amir Kirsh At 31 May 2020 at 10:12

score 655 · Answer 17 · 2020-06-02T18:16:22.120000

placement new on a class with reference field

655 views Asked by Amir Kirsh At 02 June 2020 at 18:16

score 101 · Answer 18 · 2023-02-01T02:10:12.687000

When to use std::launder?

101 views Asked by Jeff G At 01 February 2023 at 02:10

score 114 · Answer 19 · 2023-02-11T04:41:49.943000

Can I leave dynamic memory for std::complex uninitialized after allocation?

114 views Asked by alfC At 11 February 2023 at 04:41

score 1545 · Answer 20 · 2019-01-18T18:52:20.897000

std::launder alternative pre c++17

1.5k views Asked by balki At 18 January 2019 at 18:52

TechQA.

List Question

Do laundered pointers destroy optimisation opportunities?

Where can I find what std::launder really does?

Storage reuse Undefined behaviour

reachability with std::launder

Why introduce `std::launder` rather than have the compiler take care of it?

Can std::launder be used to convert an object pointer to its enclosing array pointer?

Why is this std::launder example undefined behavior?

std::launder with inplace polymorphic containers

How to get float bit representation without UB in C++?

Can I overwrite a const object via placement-new?

Why is std::launder required here?

Using std::launder to "validate" non "pointer to object" pointer value since C++17

using std::launder to implement memory buffer

Does the effect of std::launder last after the expression in which it is called?

Is std::launder required when performing arithmetic as well?

std::launder use cases in C++20

placement new on a class with reference field

When to use std::launder?

Can I leave dynamic memory for std::complex uninitialized after allocation?

std::launder alternative pre c++17

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