87915 2012-05-30 18:24:27 -0700 [chromium] Fix min/max bounds error in CCMathUtil.cpp 2012-05-30 23:05:51 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 shawnsingh shawnsingh cc-bugs enne jamesr webkit.review.bot oldest_to_newest 637904 0 shawnsingh 2012-05-30 18:24:27 -0700 To compute bounds of vertices in CCMathUtil.cpp, there were two places where min/max values were assigned to initial opposite max/min values. There was a mistake in this code however, because numeric_limits<float>::min() is actually zero, not -flt_max. The desired correct behavior is to use -flt_max. Patch coming in a moment: - moves some code around so that unit testing is nice and clean - fixes the numeric_limits mistake in two places (computeEnclosingRectForVertices and computeEnclosingClippedRect) - adds two unit tests to cover the change. 637905 1 144967 shawnsingh 2012-05-30 18:31:42 -0700 Created attachment 144967 Patch 637910 2 144967 jamesr 2012-05-30 18:43:04 -0700 Comment on attachment 144967 Patch numeric_limits<float>::min() is actually something like the least positive representable number (can't remember if it's a denormal or not). Pretty much never what you want. Looks good, do we expect any impact on pages? 637931 3 144967 shawnsingh 2012-05-30 19:13:41 -0700 Comment on attachment 144967 Patch (In reply to comment #2) > (From update of attachment 144967 [details]) > numeric_limits<float>::min() is actually something like the least positive representable number (can't remember if it's a denormal or not). Pretty much never what you want. > > Looks good, do we expect any impact on pages? Thanks for the review I wouldn't be surprised if a few rare uncommon pages broke because of this, but I have not actually encountered them. On pages that have been already working, there would not be any performance benefit or any other change. 638016 4 144967 webkit.review.bot 2012-05-30 23:05:47 -0700 Comment on attachment 144967 Patch Clearing flags on attachment: 144967 Committed r119058: <http://trac.webkit.org/changeset/119058> 638017 5 webkit.review.bot 2012-05-30 23:05:51 -0700 All reviewed patches have been landed. Closing bug. 144967 2012-05-30 18:31:42 -0700 2012-05-30 23:05:46 -0700 Patch bug-87915-20120530183141.patch text/plain 15420 shawnsingh U3VidmVyc2lvbiBSZXZpc2lvbjogMTE4ODQzCmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggYmFkOTc1MDEyYmU5ODhh OWVjYjk4ZWM1MGYxNmU5ZTNjNzliN2IyYy4uMWM4MGI4OTVjODc4YWVhYjQzYjE1MmM0MWM0OGM2 OWJkMzJlNTRlYiAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDM1IEBACisyMDEyLTA1LTMwICBTaGF3 biBTaW5naCAgPHNoYXduc2luZ2hAY2hyb21pdW0ub3JnPgorCisgICAgICAgIFtjaHJvbWl1bV0g Rml4IG1pbi9tYXggYm91bmRzIGVycm9yIGluIENDTWF0aFV0aWwuY3BwCisgICAgICAgIGh0dHBz Oi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD04NzkxNQorCisgICAgICAgIFJldmll d2VkIGJ5IE5PQk9EWSAoT09QUyEpLgorCisgICAgICAgIFR3byB1bml0IHRlc3RzIGFkZGVkIHRv IENDTWF0aFV0aWxUZXN0OgorICAgICAgICAgICAgQ0NNYXRoVXRpbFRlc3QudmVyaWZ5RW5jbG9z aW5nQ2xpcHBlZFJlY3RVc2VzQ29ycmVjdEluaXRpYWxCb3VuZHMKKyAgICAgICAgICAgIENDTWF0 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