On Sunday, 25 September 2016 at 16:07:12 UTC, Matthias Klumpp
wrote:
Hello!
I have a class similar to this one:
```
class Dummy
{
private:
string tmpDir;
public:
this (string fname)
{
tmpDir = buildPath ("/tmp", fname.baseName);
std.file.mkdirRecurse (tmpDir);
}
~this ()
{
close ();
}
void close ()
{
if (std.file.exists (tmpDir))
std.file.rmdirRecurse (tmpDir);
}
}
```
When the GC calls the classes destructor, I get a
`core.exception.InvalidMemoryOperationError@/<...>/ldc/runtime/druntime/src/core/exception.d(693):
Invalid memory operation`
Looks like rmdirRecurse tries to allocate with the GC, and the
GC doesn't like that.
Is there any good way to get the temporary directory deletet
automatically when the object is freed?
At time, I work around this bug by calling close() manually at
the appropriate time, but this feel like a rather poor solution.
Cheers,
Matthias
As seen, you can't make GC allocations in dtors. And you should
never rely on the GC calling your dtor to close things like file
handles anyways. Consider making Dummy a struct and maybe using
std.typecons(?).RefCounted with it.
