diff --git a/include/ddk/wdm.h b/include/ddk/wdm.h
index b75f452d0da..8517f6dca39 100644
--- a/include/ddk/wdm.h
+++ b/include/ddk/wdm.h
@@ -1656,10 +1656,10 @@ BOOLEAN   WINAPI ExAcquireResourceExclusiveLite(ERESOURCE*,BOOLEAN);
 BOOLEAN   WINAPI ExAcquireResourceSharedLite(ERESOURCE*,BOOLEAN);
 BOOLEAN   WINAPI ExAcquireSharedStarveExclusive(ERESOURCE*,BOOLEAN);
 BOOLEAN   WINAPI ExAcquireSharedWaitForExclusive(ERESOURCE*,BOOLEAN);
-PVOID     WINAPI ExAllocatePool(POOL_TYPE,SIZE_T) __WINE_ALLOC_SIZE(2);
-PVOID     WINAPI ExAllocatePoolWithQuota(POOL_TYPE,SIZE_T) __WINE_ALLOC_SIZE(2);
-PVOID     WINAPI ExAllocatePoolWithTag(POOL_TYPE,SIZE_T,ULONG) __WINE_ALLOC_SIZE(2);
-PVOID     WINAPI ExAllocatePoolWithQuotaTag(POOL_TYPE,SIZE_T,ULONG) __WINE_ALLOC_SIZE(2);
+PVOID     WINAPI ExAllocatePool(POOL_TYPE,SIZE_T) __WINE_ALLOC_SIZE(2) __WINE_MALLOC;
+PVOID     WINAPI ExAllocatePoolWithQuota(POOL_TYPE,SIZE_T) __WINE_ALLOC_SIZE(2) __WINE_MALLOC;
+PVOID     WINAPI ExAllocatePoolWithTag(POOL_TYPE,SIZE_T,ULONG) __WINE_ALLOC_SIZE(2) __WINE_MALLOC;
+PVOID     WINAPI ExAllocatePoolWithQuotaTag(POOL_TYPE,SIZE_T,ULONG) __WINE_ALLOC_SIZE(2) __WINE_MALLOC;
 void      WINAPI ExDeleteNPagedLookasideList(PNPAGED_LOOKASIDE_LIST);
 void      WINAPI ExDeletePagedLookasideList(PPAGED_LOOKASIDE_LIST);
 NTSTATUS  WINAPI ExDeleteResourceLite(ERESOURCE*);
@@ -1791,8 +1791,8 @@ BOOLEAN   WINAPI KeSignalCallDpcSynchronize(void*);
 NTSTATUS  WINAPI KeWaitForMultipleObjects(ULONG,void*[],WAIT_TYPE,KWAIT_REASON,KPROCESSOR_MODE,BOOLEAN,LARGE_INTEGER*,KWAIT_BLOCK*);
 NTSTATUS  WINAPI KeWaitForSingleObject(void*,KWAIT_REASON,KPROCESSOR_MODE,BOOLEAN,LARGE_INTEGER*);
 
-PVOID     WINAPI MmAllocateContiguousMemory(SIZE_T,PHYSICAL_ADDRESS) __WINE_ALLOC_SIZE(1);
-PVOID     WINAPI MmAllocateNonCachedMemory(SIZE_T) __WINE_ALLOC_SIZE(1);
+PVOID     WINAPI MmAllocateContiguousMemory(SIZE_T,PHYSICAL_ADDRESS) __WINE_ALLOC_SIZE(1) __WINE_MALLOC;
+PVOID     WINAPI MmAllocateNonCachedMemory(SIZE_T) __WINE_ALLOC_SIZE(1) __WINE_MALLOC;
 PMDL      WINAPI MmAllocatePagesForMdl(PHYSICAL_ADDRESS,PHYSICAL_ADDRESS,PHYSICAL_ADDRESS,SIZE_T);
 void      WINAPI MmBuildMdlForNonPagedPool(MDL*);
 NTSTATUS  WINAPI MmCopyVirtualMemory(PEPROCESS,void*,PEPROCESS,void*,SIZE_T,KPROCESSOR_MODE,SIZE_T*);
diff --git a/include/objbase.h b/include/objbase.h
index 11bfc95d989..4b499ffdc0f 100644
--- a/include/objbase.h
+++ b/include/objbase.h
@@ -317,7 +317,7 @@ HRESULT WINAPI CoGetInstanceFromFile(COSERVERINFO* pServerInfo, CLSID* pClsid, I
 HRESULT WINAPI CoGetInstanceFromIStorage(COSERVERINFO* pServerInfo, CLSID* pClsid, IUnknown* punkOuter, DWORD dwClsCtx, IStorage* pstg, DWORD dwCount, MULTI_QI* pResults);
 
 HRESULT WINAPI CoGetMalloc(DWORD dwMemContext, LPMALLOC* lpMalloc);
-LPVOID WINAPI CoTaskMemAlloc(SIZE_T size) __WINE_ALLOC_SIZE(1);
+LPVOID WINAPI CoTaskMemAlloc(SIZE_T size) __WINE_ALLOC_SIZE(1) __WINE_MALLOC;
 void WINAPI CoTaskMemFree(LPVOID ptr);
 LPVOID WINAPI CoTaskMemRealloc(LPVOID ptr, SIZE_T size) __WINE_ALLOC_SIZE(2);
 
diff --git a/include/oleauto.h b/include/oleauto.h
index 1d15efd26f3..6427ff55696 100644
--- a/include/oleauto.h
+++ b/include/oleauto.h
@@ -38,9 +38,9 @@ DEFINE_OLEGUID(IID_StdOle, 0x00020430,0,0);
 ULONG WINAPI OaBuildVersion(void);
 
 /* BSTR functions */
-BSTR WINAPI SysAllocString(const OLECHAR*);
-BSTR WINAPI SysAllocStringByteLen(LPCSTR,UINT);
-BSTR WINAPI SysAllocStringLen(const OLECHAR*,UINT);
+BSTR WINAPI SysAllocString(const OLECHAR*) __WINE_MALLOC;
+BSTR WINAPI SysAllocStringByteLen(LPCSTR,UINT) __WINE_MALLOC;
+BSTR WINAPI SysAllocStringLen(const OLECHAR*,UINT) __WINE_MALLOC;
 void WINAPI SysFreeString(BSTR);
 INT  WINAPI SysReAllocString(LPBSTR,const OLECHAR*);
 int  WINAPI SysReAllocStringLen(BSTR*,const OLECHAR*,UINT);
diff --git a/include/rpcndr.h b/include/rpcndr.h
index 13711f2f2df..b7a5c8c4029 100644
--- a/include/rpcndr.h
+++ b/include/rpcndr.h
@@ -658,7 +658,7 @@ RPCRTAPI LONG RPC_ENTRY
   NdrDcomAsyncStubCall( struct IRpcStubBuffer* pThis, struct IRpcChannelBuffer* pChannel, PRPC_MESSAGE pRpcMsg, DWORD * pdwStubPhase );
 
 RPCRTAPI void* RPC_ENTRY
-  NdrAllocate( PMIDL_STUB_MESSAGE pStubMsg, SIZE_T Len ) __WINE_ALLOC_SIZE(2);
+  NdrAllocate( PMIDL_STUB_MESSAGE pStubMsg, SIZE_T Len ) __WINE_ALLOC_SIZE(2) __WINE_MALLOC;
 
 RPCRTAPI void RPC_ENTRY
   NdrClearOutParameters( PMIDL_STUB_MESSAGE pStubMsg, PFORMAT_STRING pFormat, void *ArgAddr );
@@ -668,7 +668,7 @@ RPCRTAPI RPC_STATUS RPC_ENTRY
                             ULONG *pFaultStatus, RPC_STATUS Status_ );
 
 RPCRTAPI void* RPC_ENTRY
-  NdrOleAllocate( SIZE_T Size ) __WINE_ALLOC_SIZE(1);
+  NdrOleAllocate( SIZE_T Size ) __WINE_ALLOC_SIZE(1) __WINE_MALLOC;
 RPCRTAPI void RPC_ENTRY
   NdrOleFree( void* NodeToFree );
 
@@ -729,11 +729,11 @@ RPCRTAPI void RPC_ENTRY
 RPCRTAPI void RPC_ENTRY
   NdrRpcSmSetClientToOsf( PMIDL_STUB_MESSAGE pMessage );
 RPCRTAPI void * RPC_ENTRY
-  NdrRpcSmClientAllocate( SIZE_T Size ) __WINE_ALLOC_SIZE(1);
+  NdrRpcSmClientAllocate( SIZE_T Size ) __WINE_ALLOC_SIZE(1) __WINE_MALLOC;
 RPCRTAPI void RPC_ENTRY
   NdrRpcSmClientFree( void *NodeToFree );
 RPCRTAPI void * RPC_ENTRY
-  NdrRpcSsDefaultAllocate( SIZE_T Size ) __WINE_ALLOC_SIZE(1);
+  NdrRpcSsDefaultAllocate( SIZE_T Size ) __WINE_ALLOC_SIZE(1) __WINE_MALLOC;
 RPCRTAPI void RPC_ENTRY
   NdrRpcSsDefaultFree( void *NodeToFree );
 
diff --git a/include/winbase.h b/include/winbase.h
index 9fbaa466b54..748a248f56a 100644
--- a/include/winbase.h
+++ b/include/winbase.h
@@ -2350,7 +2350,7 @@ WINBASEAPI BOOL        WINAPI GetXStateFeaturesMask(CONTEXT*,DWORD64*);
 WINBASEAPI ATOM        WINAPI GlobalAddAtomA(LPCSTR);
 WINBASEAPI ATOM        WINAPI GlobalAddAtomW(LPCWSTR);
 #define                       GlobalAddAtom WINELIB_NAME_AW(GlobalAddAtom)
-WINBASEAPI HGLOBAL     WINAPI GlobalAlloc(UINT,SIZE_T) __WINE_ALLOC_SIZE(2);
+WINBASEAPI HGLOBAL     WINAPI GlobalAlloc(UINT,SIZE_T) __WINE_ALLOC_SIZE(2) __WINE_MALLOC;
 WINBASEAPI SIZE_T      WINAPI GlobalCompact(DWORD);
 WINBASEAPI ATOM        WINAPI GlobalDeleteAtom(ATOM);
 WINBASEAPI ATOM        WINAPI GlobalFindAtomA(LPCSTR);
@@ -2373,7 +2373,7 @@ WINBASEAPI BOOL        WINAPI GlobalUnlock(HGLOBAL);
 WINBASEAPI BOOL        WINAPI GlobalUnWire(HGLOBAL);
 WINBASEAPI LPVOID      WINAPI GlobalWire(HGLOBAL);
 #define                       HasOverlappedIoCompleted(lpOverlapped) ((lpOverlapped)->Internal != STATUS_PENDING)
-WINBASEAPI LPVOID      WINAPI HeapAlloc(HANDLE,DWORD,SIZE_T) __WINE_ALLOC_SIZE(3);
+WINBASEAPI LPVOID      WINAPI HeapAlloc(HANDLE,DWORD,SIZE_T) __WINE_ALLOC_SIZE(3) __WINE_MALLOC;
 WINBASEAPI SIZE_T      WINAPI HeapCompact(HANDLE,DWORD);
 WINBASEAPI HANDLE      WINAPI HeapCreate(DWORD,SIZE_T,SIZE_T);
 WINBASEAPI BOOL        WINAPI HeapDestroy(HANDLE);
@@ -2440,7 +2440,7 @@ WINBASEAPI HMODULE     WINAPI LoadLibraryExW(LPCWSTR,HANDLE,DWORD);
 WINBASEAPI DWORD       WINAPI LoadModule(LPCSTR,LPVOID);
 WINBASEAPI HMODULE     WINAPI LoadPackagedLibrary(LPCWSTR,DWORD);
 WINBASEAPI HGLOBAL     WINAPI LoadResource(HMODULE,HRSRC);
-WINBASEAPI HLOCAL      WINAPI LocalAlloc(UINT,SIZE_T) __WINE_ALLOC_SIZE(2);
+WINBASEAPI HLOCAL      WINAPI LocalAlloc(UINT,SIZE_T) __WINE_ALLOC_SIZE(2) __WINE_MALLOC;
 WINBASEAPI SIZE_T      WINAPI LocalCompact(UINT);
 WINBASEAPI UINT        WINAPI LocalFlags(HLOCAL);
 WINBASEAPI HLOCAL      WINAPI LocalFree(HLOCAL);
diff --git a/include/wincrypt.h b/include/wincrypt.h
index 77b2fb5d7cf..8adbd2c1300 100644
--- a/include/wincrypt.h
+++ b/include/wincrypt.h
@@ -4043,7 +4043,7 @@ WINADVAPI BOOL WINAPI CryptVerifySignatureW (HCRYPTHASH, const BYTE *, DWORD, HC
 #define               CryptVerifySignature WINELIB_NAME_AW(CryptVerifySignature)
 
 /* crypt32.dll functions */
-LPVOID WINAPI CryptMemAlloc(ULONG cbSize) __WINE_ALLOC_SIZE(1);
+LPVOID WINAPI CryptMemAlloc(ULONG cbSize) __WINE_ALLOC_SIZE(1) __WINE_MALLOC;
 LPVOID WINAPI CryptMemRealloc(LPVOID pv, ULONG cbSize) __WINE_ALLOC_SIZE(2);
 VOID   WINAPI CryptMemFree(LPVOID pv);
 
diff --git a/include/wine/heap.h b/include/wine/heap.h
index fb687c92393..f88942bbb00 100644
--- a/include/wine/heap.h
+++ b/include/wine/heap.h
@@ -24,12 +24,12 @@
 
 #include <winbase.h>
 
-static inline void * __WINE_ALLOC_SIZE(1) heap_alloc(SIZE_T len)
+static inline void * __WINE_ALLOC_SIZE(1) __WINE_MALLOC heap_alloc(SIZE_T len)
 {
     return HeapAlloc(GetProcessHeap(), 0, len);
 }
 
-static inline void * __WINE_ALLOC_SIZE(1) heap_alloc_zero(SIZE_T len)
+static inline void * __WINE_ALLOC_SIZE(1) __WINE_MALLOC heap_alloc_zero(SIZE_T len)
 {
     return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
 }
@@ -46,7 +46,7 @@ static inline void heap_free(void *mem)
     HeapFree(GetProcessHeap(), 0, mem);
 }
 
-static inline void * __WINE_ALLOC_SIZE(1,2) heap_calloc(SIZE_T count, SIZE_T size)
+static inline void * __WINE_ALLOC_SIZE(1,2) __WINE_MALLOC heap_calloc(SIZE_T count, SIZE_T size)
 {
     SIZE_T len = count * size;
 
diff --git a/include/winnt.h b/include/winnt.h
index 79df4259f59..a0b430b47d6 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -204,6 +204,12 @@ extern "C" {
 #define __WINE_ALLOC_SIZE(...)
 #endif
 
+#if defined(__GNUC__) && (__GNUC__ > 2)
+#define __WINE_MALLOC __attribute__((malloc))
+#else
+#define __WINE_MALLOC
+#endif
+
 /* Anonymous union/struct handling */
 
 #ifndef NONAMELESSSTRUCT
diff --git a/include/winternl.h b/include/winternl.h
index a4cbcb316cb..43a4ddf2f39 100644
--- a/include/winternl.h
+++ b/include/winternl.h
@@ -4200,7 +4200,7 @@ NTSYSAPI PVOID     WINAPI RtlAddVectoredExceptionHandler(ULONG,PVECTORED_EXCEPTI
 NTSYSAPI NTSTATUS  WINAPI RtlAdjustPrivilege(ULONG,BOOLEAN,BOOLEAN,PBOOLEAN);
 NTSYSAPI NTSTATUS  WINAPI RtlAllocateAndInitializeSid(PSID_IDENTIFIER_AUTHORITY,BYTE,DWORD,DWORD,DWORD,DWORD,DWORD,DWORD,DWORD,DWORD,PSID *);
 NTSYSAPI RTL_HANDLE * WINAPI RtlAllocateHandle(RTL_HANDLE_TABLE *,ULONG *);
-NTSYSAPI PVOID     WINAPI RtlAllocateHeap(HANDLE,ULONG,SIZE_T) __WINE_ALLOC_SIZE(3);
+NTSYSAPI PVOID     WINAPI RtlAllocateHeap(HANDLE,ULONG,SIZE_T) __WINE_ALLOC_SIZE(3) __WINE_MALLOC;
 NTSYSAPI WCHAR     WINAPI RtlAnsiCharToUnicodeChar(LPSTR *);
 NTSYSAPI DWORD     WINAPI RtlAnsiStringToUnicodeSize(const STRING *);
 NTSYSAPI NTSTATUS  WINAPI RtlAnsiStringToUnicodeString(PUNICODE_STRING,PCANSI_STRING,BOOLEAN);