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* Fixed CID 1472: "next" could be NULL and dereferenced.

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* Simplified code a bit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38194 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2010-08-17 15:39:26 +00:00
parent ed64d4e0f5
commit 6dcca7f6ab
1 changed files with 9 additions and 14 deletions
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23
src/system/kernel/vm/VMUserAddressSpace.cpp
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@ -1,6 +1,6 @@
/*
* Copyright 2009-2010, Ingo Weinhold, ingo_weinhold@gmx.de.
* Copyright 2002-2009, Axel Dörfler, axeld@pinc-software.de.
* Copyright 2002-2010, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*
* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
@ -192,24 +192,19 @@ VMUserAddressSpace::CanResizeArea(VMArea* area, size_t newSize)
{
VMUserArea* next = fAreas.GetNext(static_cast<VMUserArea*>(area));
addr_t newEnd = area->Base() + (newSize - 1);
if (next == NULL) {
if (fEndAddress >= newEnd)
return true;
} else {
if (next->Base() > newEnd)
return true;
}
if (next == NULL)
return fEndAddress >= newEnd;
if (next->Base() > newEnd)
return true;
// If the area was created inside a reserved area, it can
// also be resized in that area
// TODO: if there is free space after the reserved area, it could
// be used as well...
if (next->id == RESERVED_AREA_ID && next->cache_offset <= area->Base()
&& next->Base() + (next->Size() - 1) >= newEnd) {
return true;
}
return false;
return next->id == RESERVED_AREA_ID && next->cache_offset <= area->Base()
&& next->Base() + (next->Size() - 1) >= newEnd;
}