RESOLVED FIXED 211012
Suppress ASan on DFG::clobberize() to work around an ASan bug. 
https://bugs.webkit.org/show_bug.cgi?id=211012
Summary Suppress ASan on DFG::clobberize() to work around an ASan bug.
Mark Lam
Reported 2020-04-24 23:20:17 PDT
ASan was incorrectly thinking that we're accessing invalid stack memory when we're not. <rdar://problem/62275430>
Attachments
proposed patch. (3.60 KB, patch)
2020-04-24 23:46 PDT, Mark Lam 		ysuzuki: review+
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View All Add attachment proposed patch, testcase, etc.
Mark Lam
Comment 1 2020-04-24 23:46:19 PDT
Created attachment 397545 [details] proposed patch.
Yusuke Suzuki
Comment 2 2020-04-24 23:59:35 PDT
Comment on attachment 397545 [details] proposed patch. View in context: https://bugs.webkit.org/attachment.cgi?id=397545&action=review r=me > Source/JavaScriptCore/dfg/DFGClobberize.h:43 > +SUPPRESS_ASAN void clobberize(Graph& graph, Node* node, const ReadFunctor& read, const WriteFunctor& write, const DefFunctor& def) Can you add FIXME comment describing why SUPPRESS_ASAN is necessary (describing about ASAN bug)?
Mark Lam
Comment 3 2020-04-25 00:25:18 PDT
(In reply to Yusuke Suzuki from comment #2) > Can you add FIXME comment describing why SUPPRESS_ASAN is necessary > (describing about ASAN bug)? Thanks for the review. I've added the FIXME with explanation. Landed in r260692: <http://trac.webkit.org/r260692>.
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