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Bug 2263 – spec does not specify how padding on 80 bit real is initialized

Status: RESOLVED
Resolution: INVALID
Severity: normal
Priority: P2
Component: dmd
Product: D
Version: D1 (retired)
Platform: x86
OS: Linux
Creation time: 2008-08-01T17:29:00Z
Last change time: 2014-03-01T00:35:42Z
Keywords: spec
Assigned to: bugzilla
Creator: tomas

Comments

Comment #0 by tomas — 2008-08-01T17:29:25Z

on linux real takes 12 bytes for 32bit alignment. the spec does not specify if the extra 2 byte padding should be zero initialized or not. other basic types which might be implemented with a larger allocation than they use for data could also use clarification on this.

Comment #1 by bugzilla — 2008-08-03T04:06:26Z

The spec specifies them in expression.html#EqualExpression: "Equality for struct objects means the bit patterns of the objects match exactly (the existence of alignment holes in the objects is accounted for, usually by setting them all to 0 upon initialization)."