[Lilypond-auto] Issue 4376 in lilypond: Patch: Redefine LY_ASSERT_SMOB to deal with inherited is_smob

[lilypond]

Status: Started
Owner: address@hidden
Labels: Type-Enhancement Patch-new

New issue 4376 by address@hidden: Patch: Redefine LY_ASSERT_SMOB to deal with  
inherited is_smob
https://code.google.com/p/lilypond/issues/detail?id=4376

Redefine LY_ASSERT_SMOB to deal with inherited is_smob

When LY_ASSERT_SMOB is called with a class that is actually derived from
some smobified base class providing is_smob and unsmob, the resulting
check and error message is inaccurate.  This patch uses dynamic_cast in
order to sustain sensible behavior.  The performance impact for
previously working code and type combinations is low since dynamic_cast
in this configuration resolves at compile time.

http://codereview.appspot.com/229680043

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