[Webkit-unassigned] [Bug 140143] New: Source/WTF/wtf/OSAllocatorPosix.cpp fails to build on OS X Leopard due to madvise() extensions not being available

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=140143

            Bug ID: 140143
           Summary: Source/WTF/wtf/OSAllocatorPosix.cpp fails to build on
                    OS X Leopard due to madvise() extensions not being
                    available
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Template Framework
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jeremyhu at apple.com

Compilation of webkit-gtk-2.4.7 fails on OS X Leopard:

:info:build Source/WTF/wtf/OSAllocatorPosix.cpp:54:35: error: use of undeclared identifier 'MADV_FREE_REUSABLE'
:info:build     while (madvise(result, bytes, MADV_FREE_REUSABLE) == -1 && errno == EAGAIN) { }
:info:build                                   ^
:info:build Source/WTF/wtf/OSAllocatorPosix.cpp:139:36: error: use of undeclared identifier 'MADV_FREE_REUSE'
:info:build     while (madvise(address, bytes, MADV_FREE_REUSE) == -1 && errno == EAGAIN) { }
:info:build                                    ^
:info:build Source/WTF/wtf/OSAllocatorPosix.cpp:156:36: error: use of undeclared identifier 'MADV_FREE_REUSABLE'
:info:build     while (madvise(address, bytes, MADV_FREE_REUSABLE) == -1 && errno == EAGAIN) { }
:info:build                                    ^
:info:build 3 errors generated.
:info:build GNUmakefile:52455: recipe for target 'Source/WTF/wtf/libWTF_la-OSAllocatorPosix.lo' failed
:info:build gmake: *** [Source/WTF/wtf/libWTF_la-OSAllocatorPosix.lo] Error 1

This happens because Leopard does not support:

#define MADV_ZERO_WIRED_PAGES   6       /* zero the wired pages that have not been unwired before the entry is deleted */
#define MADV_FREE_REUSABLE      7       /* pages can be reused (by anyone) */
#define MADV_FREE_REUSE         8       /* caller wants to reuse those pages */
#define MADV_CAN_REUSE          9

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