[webkit-dev] Proposal: Avoiding fastMalloc(0) in WebKit

Eric Seidel eric at webkit.org
Mon Jun 6 15:35:44 PDT 2011

I have posted a patch to (optionally) ASSERT whenever fastMalloc is
called with 0 size:

After fixing https://bugs.webkit.org/show_bug.cgi?id=55091 for a large
performance win in the HTML parser (by avoiding a single fastMalloc(0)
call) I now believe that every call to fastMalloc(0) is a programming
error in our source.  It should always be faster to branch in the
caller to avoid fastMalloc(0) than to call fastMalloc(0).

I am announcing this in case anyone has opinions or comments, as once
ports start turning this on, you may hit this assertion with your

I welcome your commentary on the bug!


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