[Webkit-unassigned] [Bug 70060] New: DFG JIT should not be using ENABLE macro to enable features
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu Oct 13 14:49:04 PDT 2011
https://bugs.webkit.org/show_bug.cgi?id=70060
Summary: DFG JIT should not be using ENABLE macro to enable
features
Product: WebKit
Version: 528+ (Nightly build)
Platform: Unspecified
OS/Version: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: barraclough at apple.com
The ENABLE macro is only intended to be used to detect features that are configured in Platform.h. Using its to detect settings defined in other headers is an error.
The problem is that the ENABLE macro checks if the value is defined, so will silently return false if you fail to include the header defining the switch.
This is not a problem if (1) the settings are defined in the same header that defines the macro that tests them, or (2) the header is included everywhere. In the case of ENABLE settings defined in Platform.h, both are true!
To make this clear, add an explicit DFG_ENABLE macro.
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