[AA] Cannot dup const AA

[dlangBugzillaToGithub]

Jerry Quinn (@jlquinn) reported this on 2013-12-11T07:02:21Z

Transferred from https://issues.dlang.org/show_bug.cgi?id=11725

CC List

Description

void foo() {
  const int[] aa = [1,2];
  int[] bb = aa.dup;		// Works

  const int[string] ia = ["a":1,"b":2];
  int[string] ib = ia.dup;	// Error
}

/home/jlquinn/dmd2/linux/bin64/dmd -c aabug.d 
aabug.d(7): Error: cannot implicitly convert expression (ia.dup()) of type const(int)[string] to int[string]

Version 2.064.2 on Debian x86_64

[dlangBugzillaToGithub]

hsteoh commented on 2019-10-24T17:46:13Z

Still happens on git master (b70b154d716b681c242f7d5fb3a4cea9449d508d).

[dlangBugzillaToGithub]

dlang-bot commented on 2019-10-24T18:26:16Z

@quickfur created dlang/druntime pull request #2838 "Fix issue 11725: AA.dup should return mutable AA where possible." fixing this issue:

- Fix issue 11725: AA.dup should return mutable AA where possible.
  
  Since the original AA has been duplicated, it should be safe to mutate
  the copy. No need to needlessly restrict the copy to be const too.

https://github.com/dlang/druntime/pull/2838

[dlangBugzillaToGithub]

dlang-bot commented on 2024-10-09T10:42:05Z

@ntrel updated dlang/dmd pull request #16979 "Fix issue 11725: AA.dup should return mutable AA where possible" fixing this issue:

- Fix Bugzilla 11725: AA.dup should return mutable AA where possible
  
  Since the original AA has been duplicated, it should be safe to mutate
  the copy. No need to restrict the copy to be const too.

https://github.com/dlang/dmd/pull/16979