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Bug 4643 – Shared values are unwritable

Status: RESOLVED
Resolution: FIXED
Severity: major
Priority: P2
Component: phobos
Product: D
Version: D2
Platform: Other
OS: Windows
Creation time: 2010-08-14T03:09:00Z
Last change time: 2010-12-13T02:44:13Z
Assigned to: nobody
Creator: simen.kjaras

Comments

Comment #0 by simen.kjaras — 2010-08-14T03:09:59Z

shared int n; void main( ) { writeln( n ); } This program fails with: E:\DMD\DMD2\windows\bin\..\..\src\phobos\std\format.d(306): Error: cannot implic itly convert expression (& arg) of type shared(int)* to const(void)*

Comment #1 by dsimcha — 2010-09-04T09:02:33Z

http://dsource.org/projects/phobos/changeset/1957 Fixed for shared values w/o aliasing. For shared values w/ aliasing, it shouldn't work because if one thread tries to write the value while another thread modifies it, Bad Things Will Happen (TM).