[Issue 3789] [TDPL] Structs members that require non-bitwise comparison not correctly compared

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http://d.puremagic.com/issues/show_bug.cgi?id=3789



--- Comment #27 from Denis Shelomovskij <verylonglogin.reg at gmail.com> 2013-04-24 12:55:27 MSD ---
(In reply to comment #26)
> (In reply to comment #22)
> > Just want to note the compiler often can't optimize a comparison to be bitwise
> > because of align gaps which also should be ignored to conform `opEquals`
> > behavior.
> 
> The holes must be initialized to zero, by definition, so that a bitwise
> comparison can be done.

Nop. Holes are holes, that's all.

I'd be happy if it will be documented that padding holes must be
zero-initialized. As for now we has the situation even worse than
underdocumented (as always) C11, which partially defines it in "6.7.9
Initialization", para 10.

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