https://issues.dlang.org/show_bug.cgi?id=20379
Issue ID: 20379
Summary: Cannot destroy associative arrays AAs (Destructor not
called on values)
Product: D
Version: D2
Hardware: x86_64
OS: Linux
Status: NEW
Severity: major
Priority: P1
Component: druntime
Assignee: [email protected]
Reporter: [email protected]
Tested with 2.089:
-------------------------------------------------
import std.stdio;
struct Test
{
~this(){writefln("~this %x", &this);}
}
void main()
{
Test[int] cache;
cache[0] = Test();
writeln("destroy");
destroy(cache);
writeln(cache);
writeln("destroyed");
}
-------------------------------------------------
destroy
[]
destroyed
~this 7f521c9d8004
This breaks deterministic destruction (e.g. of reference counted objects).
Replacing destroy with this:
-------------------------------------------------
foreach(key, ref val; cache)
destroy(val);
cache = null;
-------------------------------------------------
destroy
~this 7f9b3f65d004
[]
destroyed
~this 7f9b3f65d004
So this can be used as a workaround for types which do not mind being
destructed to often, such as Reference Counted Types. For all other types, this
will double-destruct it.
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