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Enable use of RtlDisownModuleHeapAllocation when available #256

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#257
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Enable use of RtlDisownModuleHeapAllocation when available#256
#257
@jonwis

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@jonwis
jonwis
opened on Aug 16, 2022

wil/include/wil/result_macros.h

Lines 1301 to 1310 in fd91a81

__declspec(selectany) NTSTATUS(__stdcall *g_pfnRtlDisownModuleHeapAllocation)(_In_ HANDLE heapHandle, _In_ PVOID address) WI_PFN_NOEXCEPT = nullptr;
// Allocate and disown the allocation so that Appverifier does not complain about a false leak
inline PVOID ProcessHeapAlloc(_In_ DWORD flags, _In_ size_t size)
{
PVOID allocation = ::HeapAlloc(::GetProcessHeap(), flags, size);
if (g_pfnRtlDisownModuleHeapAllocation)
{
(void)g_pfnRtlDisownModuleHeapAllocation(::GetProcessHeap(), allocation);

This API is now publicly documented - https://docs.microsoft.com/en-us/windows/win32/DevNotes/rtlsupportapi/nf-rtlsupportapi-rtldisownmoduleheapallocation

Move the setting of the function pointer to the global init path when available so apps using appverifier and wil no longer get a "leak" warning.

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