[Webkit-unassigned] [Bug 69739] New: Loss of precision when converting from double to int

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=69739

           Summary: Loss of precision when converting from double to int
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: dbates at webkit.org
                CC: kbr at google.com, wjmaclean at chromium.org


Bug #68035 (http://trac.webkit.org/changeset/97034) added the method FrameView::zoomAnimatorTransformChanged() which implicitly converts a double precision computation (64-bit) to an integer result (32-bit) and hence causes a warning on the Leopard Intel Debug bot:

[[
cc1plus: warnings being treated as errors
/Volumes/Big/WebKit-BuildSlave/leopard-intel-debug/build/Source/WebCore/page/FrameView.cpp: In member function 'virtual void WebCore::FrameView::zoomAnimatorTransformChanged(double, double, double, WebCore::ScrollableArea::ZoomAnimationState)':
/Volumes/Big/WebKit-BuildSlave/leopard-intel-debug/build/Source/WebCore/page/FrameView.cpp:1230: warning: implicit conversion shortens 64-bit value into a 32-bit value
/Volumes/Big/WebKit-BuildSlave/leopard-intel-debug/build/Source/WebCore/page/FrameView.cpp:1230: warning: implicit conversion shortens 64-bit value into a 32-bit value
/Volumes/Big/WebKit-BuildSlave/leopard-intel-debug/build/Source/WebCore/page/FrameView.cpp:1230: warning: implicit conversion shortens 64-bit value into a 32-bit value
]]
(http://build.webkit.org/builders/Leopard%20Intel%20Debug%20%28Build%29/builds/40404/steps/compile-webkit/logs/stdio)

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