229843 2021-09-02 16:58:43 -0700 Math.hypot checks for infinite values prematurely 2021-09-10 21:37:07 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 richard.gibson ysuzuki ews-watchlist fpizlo keith_miller mark.lam msaboff ross.kirsling saam tzagallo webkit-bug-importer ysuzuki oldest_to_newest 1789985 0 richard.gibson 2021-09-02 16:58:43 -0700 The algorithm for Math.hypot at https://tc39.es/ecma262/#sec-math.hypot requires coercing each argument to a Number before doing anything else. However, this coercion is incorrectly aborted after encountering an infinite value. The following expression should throw an exception, but does not: Math.hypot({valueOf(){ return Infinity }}, {valueOf(){ throw new Error("arguments[1]") }}) 1790642 1 437397 ysuzuki 2021-09-06 02:01:41 -0700 Created attachment 437397 Patch 1790756 2 437397 ross.kirsling 2021-09-06 11:51:35 -0700 Comment on attachment 437397 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=437397&action=review r=me with comments. > Source/JavaScriptCore/ChangeLog:8 > + We should throw an error about non finite argument after coercing all arguments to doubles. Don't forget the spec link. :) https://tc39.es/ecma262/#sec-math.hypot > JSTests/stress/math-hypot-evaluation-ordering.js:18 > +shouldThrow(() => { > + Math.hypot({valueOf(){ return Infinity }}, {valueOf(){ throw new Error("arguments[1]") }}) > +}, `Error: arguments[1]`); I think this test should be upstreamed to test262. 1790984 3 437397 ysuzuki 2021-09-07 06:50:54 -0700 Comment on attachment 437397 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=437397&action=review >> Source/JavaScriptCore/ChangeLog:8 >> + We should throw an error about non finite argument after coercing all arguments to doubles. > > Don't forget the spec link. :) > https://tc39.es/ecma262/#sec-math.hypot Added. >> JSTests/stress/math-hypot-evaluation-ordering.js:18 >> +}, `Error: arguments[1]`); > > I think this test should be upstreamed to test262. @Gibson, do you have a plan adding that? 1790985 4 ysuzuki 2021-09-07 06:52:13 -0700 Committed r282081 (241381@main): <https://commits.webkit.org/241381@main> 1790986 5 webkit-bug-importer 2021-09-07 06:53:19 -0700 <rdar://problem/82819521> 1791190 6 richard.gibson 2021-09-07 13:23:35 -0700 Yes, I will submit a test262 PR unless someone beats me to it. 1792650 7 richard.gibson 2021-09-10 21:37:07 -0700 Forgot that I'd already done it: https://github.com/tc39/test262/commit/50f3fca7a0eac6b6e8e5e9aee7af3c2a05831261 437397 2021-09-06 02:01:41 -0700 2021-09-06 11:51:35 -0700 Patch bug-229843-20210906020140.patch text/plain 3774 ysuzuki U3VidmVyc2lvbiBSZXZpc2lvbjogMjgyMDU0CmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw dENvcmUvQ2hhbmdlTG9nIGIvU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwppbmRleCBi ZTM5NDE1YzNmNmI3NTVlOTY3YjE3MTMzYjU5ZTY5ZWM1NjNkOWNjLi41OTQ5Njg1ZDA5N2RkMzc3 OWNjYTkyNzcyZmQxNmJkYzdjNWI2M2VkIDEwMDY0NAotLS0gYS9Tb3VyY2UvSmF2YVNjcmlwdENv cmUvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKQEAgLTEs MyArMSwxNSBAQAorMjAyMS0wOS0wNiAgWXVzdWtlIFN1enVraSAgPHlzdXp1a2lAYXBwbGUuY29t 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