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Bug 21202 – [REG2.093] std.algorithm.mutation.moveEmplace cannot deduce purity and errors

Status: CLOSED
Resolution: DUPLICATE
Severity: regression
Priority: P1
Component: phobos
Product: D
Version: D2
Platform: All
OS: All
Creation time: 2020-08-27T20:46:42Z
Last change time: 2021-08-22T21:16:22Z
Keywords: industry, pull
Assigned to: No Owner
Creator: johanengelen
Depends on: 21850

Comments

Comment #0 by johanengelen — 2020-08-27T20:46:42Z

This code no longer works since dlang 2.093: ``` struct Strukt2 { this(int* _block) { } } struct Strukt { int* block; Strukt2 foo() { return Strukt2(null); } alias foo this; } void johan() { Strukt a; Strukt b; import std.algorithm.mutation: moveEmplace; moveEmplace(a, b); } ``` Error: `pure` function `std.algorithm.mutation.moveEmplace!(Strukt).moveEmplace` cannot call impure function `std.algorithm.mutation.moveEmplaceImpl!(Strukt).moveEmplaceImpl` Can be fixed by annotating `moveEmplaceImpl` with `pure`.

Comment #1 by dlang-bot — 2020-10-20T13:21:02Z

@JohanEngelen updated dlang/phobos pull request #7670 "Help compiler deduce `pure` for moveEmplaceImpl" fixing this issue: - whitespace fix Fixes issue 21202 https://github.com/dlang/phobos/pull/7670

Comment #2 by razvan.nitu1305 — 2021-08-17T16:35:24Z

*** This issue has been marked as a duplicate of issue 21850 ***