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From: Paul Hilfinger <hilfingr@gnat.com>
To: carlton@kealia.com
Cc: gdb-patches@sources.redhat.com
Subject: Re: [RFC] Proposed changes in symbol-handling for Ada
Date: Wed, 21 Jan 2004 11:22:00 -0000	[thread overview]
Message-ID: <20040121112215.AE278F2810@nile.gnat.com> (raw)
In-Reply-To: <yf2hdyqfcgm.fsf@hawaii.kealia.com> (message from David Carlton on Tue, 20 Jan 2004 15:05:13 -0800)


> 3) Have Ada symbols save the demangled names of symbols after being
>    forced to demangle them.  This could cause a memory increase if you
>    for some reason have to demangle lots of names.

That sounds entirely reasonable.  

> (Hmm: where would you allocate the cached name from?  You can't get at
> the appropriate obstack from the symbol, can you?

Actually, the only true problem here is that the obvious way of
answering this question---adding to the language-specific union a new
entry containing an obstack* / char* union plus a flag---increases the
size of a symbol (logically it doesn't have to, but C layout and
alignment rules apparently add some padding).  To avoid increasing its
size, there is the aesthetically distateful option of adding a flag
byte AFTER the language-specific field; or perhaps we could call it
a union tag.  Harumph.

> Sigh.  I do not
> enjoy worrying about memory management when programming in C.)

You don't?  Good grief, man, what has happened to your sense of
adventure, your thirst for danger?

Paul


  reply	other threads:[~2004-01-21 11:22 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-11-08 22:55 Interactions of symbol-lookup with language Paul N. Hilfinger
2003-11-10 17:07 ` David Carlton
2004-01-20 10:16   ` [RFC] Proposed changes in symbol-handling for Ada Paul Hilfinger
2004-01-20 15:01     ` Daniel Jacobowitz
2004-01-21 10:55       ` Paul Hilfinger
2004-01-21 15:19         ` Daniel Jacobowitz
2004-01-23 21:08           ` Andrew Cagney
2004-01-20 23:05     ` David Carlton
2004-01-21 11:22       ` Paul Hilfinger [this message]
2004-01-21 16:49         ` David Carlton
2004-01-21 18:50           ` Daniel Jacobowitz
2003-11-11  1:23 ` Interactions of symbol-lookup with language Elena Zannoni

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