D issues are now tracked on GitHub. This Bugzilla instance remains as a read-only archive.
Issue 7230 - Crash during printing anonymous union with writeln family functions.
Summary: Crash during printing anonymous union with writeln family functions.
Status: RESOLVED FIXED
Alias: None
Product: D
Classification: Unclassified
Component: phobos (show other issues)
Version: D2
Hardware: x86 Linux
: P2 normal
Assignee: No Owner
URL:
Keywords: patch
: 7324 (view as issue list)
Depends on:
Blocks:
 
Reported: 2012-01-05 02:28 UTC by Lukasz Wrzosek
Modified: 2012-03-25 03:18 UTC (History)
2 users (show)

See Also:

Attachments
bug test case (157 bytes, text/x-dsrc)
2012-01-05 02:30 UTC, Lukasz Wrzosek 		Details
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this issue.
Description Lukasz Wrzosek 2012-01-05 02:28:54 UTC 
writeln is not aware of anonymous unions inside of structs (probably classes too).

The attached file crashes when run.
Comment 1 Lukasz Wrzosek 2012-01-05 02:30:33 UTC 
Created attachment 1068 [details]
bug test case
Comment 2 bearophile_hugs 2012-01-05 02:38:21 UTC 
Code copied here to increase its visibility:


import std.stdio;
struct Bug7230 {
    union {
        string a;
        int b;
    }
}
void main() {
    Bug7230 bug;
    bug.b = 123;
    writeln(bug);
}
Comment 3 Kenji Hara 2012-01-06 12:36:45 UTC 
https://github.com/D-Programming-Language/phobos/pull/383

The format implemented the patch is not yet determined.
Please comment your opinion.
Comment 4 bearophile_hugs 2012-01-06 13:31:11 UTC 
(In reply to comment #3)
> https://github.com/D-Programming-Language/phobos/pull/383
> 
> The format implemented the patch is not yet determined.
> Please comment your opinion.

Thank you for improving writeln.

Maybe the string tag "union" is better than "overlap":
Bug7230("hello", #{union a, b, c}, 10)
Comment 6 Kenji Hara 2012-03-25 03:18:02 UTC 
*** Issue 7324 has been marked as a duplicate of this issue. ***