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digitalmars.D.bugs - [Issue 8566] New: Inconsistency in aligning named and anonymous structs

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8566

           Summary: Inconsistency in aligning named and anonymous structs
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: m.strashun gmail.com


--- Comment #0 from Mihail Strashun <m.strashun gmail.com> 2012-08-20 05:47:51
PDT ---
Code sample:

=================================================
import std.stdio;

union Anonymous {
        char[9] buffer;
        align(1) struct {
                align(1):
                        int a;
                        int b;
                        char c;
        }
}

union Named {
        char[9] buffer;
        align(1) struct Name {
                align(1):
                        int a;
                        int b;
                        char c;
        }
}
void main() {
        writeln(Named.sizeof);
        writeln(Anonymous.sizeof);
}

=================================================

Output:
9
12

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parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=8566


Walter Bright <bugzilla digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla digitalmars.com
         Resolution|                            |INVALID


--- Comment #1 from Walter Bright <bugzilla digitalmars.com> 2012-08-20
15:23:26 PDT ---
An unnamed struct/union allocates storage for its members. A named one does
not, it just defines a type. Hence the size difference.

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