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List:       kde-bugs-dist
Subject:    [Bug 197900] Support suppressions with demangled names
From:       Julian Seward <jseward () acm ! org>
Date:       2009-06-25 23:47:54
Message-ID: 20090625234754.48AF116F84 () immanuel ! kde ! org
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https://bugs.kde.org/show_bug.cgi?id=197900


Julian Seward <jseward@acm.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jseward@acm.org




--- Comment #3 from Julian Seward <jseward acm org>  2009-06-26 01:47:53 ---

> Re the demangling, I think suppressions use mangled names due to performance
> concerns.

Well, that, and due to simplicity of implementation.

> Because function names are stored internally in mangled form, this
> avoids any need to demangle when matching.

The performance thing is probably getroundable without much effort, if
we build a cache of mangled->demangled name pairs.

> But this seems like a weak excuse,
> as function names in suppressions could be mangled upon startup.  Julian, do
> you know if there are any other reasons?

There is the problem that although we have a nice self-contained library
to do demangling, we don't have one that does enmangling.  I guess that
is deep in the innards of gcc somewhere.  So I don't even know that we
could (easily) mangle names, should we want to do that.

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