[Issue 9498] Rang violation using AA

Tue Feb 12 11:49:34 PST 2013

http://d.puremagic.com/issues/show_bug.cgi?id=9498

Maxim Fomin <maxim at maxim-fomin.ru> changed:

           What    |Removed                     |Added
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                 CC|                            |maxim at maxim-fomin.ru

--- Comment #1 from Maxim Fomin <maxim at maxim-fomin.ru> 2013-02-12 11:49:32 PST ---
This is neither a bug nor a regression. 

An element is accessed in return statement, which makes it an rvalue, so
allocation if absence does not applies here. 

It works as clarified in TDPL. From TDPL (p. 115):

"To read a value off an associative array given a key, just read aa [ key] .
(The compiler distinguishes reads from writes and invokes slightly different
functions.)" - it is implemented in druntime as aaGetValueX and aaGetRvalueX or
something like that.

Further: 

"If you try to read the value for a key not found in the associative array, a
range violation exception is thrown."

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