Unexpected memory reuse
Sean Kelly via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Thu Jul 31 13:32:55 PDT 2014
On Thursday, 31 July 2014 at 19:28:24 UTC, Marc Schütz wrote:
> On Thursday, 31 July 2014 at 18:30:41 UTC, Anonymous wrote:
>> module test;
>> import std.stdio;
>>
>> class buffer(T, size_t sz) {
>> auto arr = new T[sz];
>
> This allocates an array with `sz` elements once _at compile
> time_, places it somewhere into the executable, and uses its
> address as the default initializer for the member `arr`. All
> instances of `buffer` (with the same template parameters) that
> you create and don't change `arr` have it point to the same
> memory.
Huh. For some reason I thought in-class initializations like
this were effectively rewritten to occur as a part of the class
ctor. But looking at the docs I guess this actually affects the
format of the static initializer.
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