Bug 6336 – Can't return ref T where T has const/immutable members
Status
RESOLVED
Resolution
FIXED
Severity
major
Priority
P2
Component
dmd
Product
D
Version
D2
Platform
All
OS
All
Creation time
2011-07-16T08:19:00Z
Last change time
2012-10-07T11:49:15Z
Keywords
patch, rejects-valid
Assigned to
nobody
Creator
verylonglogin.reg
Comments
Comment #0 by verylonglogin.reg — 2011-07-16T08:19:56Z
As a result "front" and "back" template functions from std.array don't compile, isInputRange!(S[]) is false and none of range functions can work with an array of structs with a const/immutable member.
immutable struct IS { int t; }
struct S { immutable int t; }
void f(ref S) { } //compiles
ref IS f() { return IS(); } //compiles too
ref S f() { return S(); } //doesn't compile
void main() {
static assert( isInputRange!(S[]) ); //as a result assertion failure
}
Comment #1 by k.hara.pg — 2012-01-24T05:23:22Z
*** Issue 5690 has been marked as a duplicate of this issue. ***