[Issue 20359] New: core.atomic.cas throws with null as `ifThis`
d-bugmail at puremagic.com
d-bugmail at puremagic.com
Wed Nov 6 07:29:33 UTC 2019
https://issues.dlang.org/show_bug.cgi?id=20359
Issue ID: 20359
Summary: core.atomic.cas throws with null as `ifThis`
Product: D
Version: D2
Hardware: x86_64
OS: Windows
Status: NEW
Severity: normal
Priority: P1
Component: druntime
Assignee: nobody at puremagic.com
Reporter: johnch_atms at hotmail.com
The following code produces an access violation in the 2.089.0 release:
import core.atomic;
void main() {
Object a, b = new Object;
cas(&a, null, b);
}
If you cast everything to shared - cas(cast(shared)&a, cast(shared)null,
cast(shared)b) - it works as expected. Also if you pass an instantiated object
to the `ifThis` argument, it will also work correctly.
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