diff --git a/lib/checkunusedvar.cpp b/lib/checkunusedvar.cpp
index 8ba6b4770..0e3f3feb8 100644
--- a/lib/checkunusedvar.cpp
+++ b/lib/checkunusedvar.cpp
@@ -940,9 +940,11 @@ void CheckUnusedVar::checkFunctionVariableUsage_iterateScopes(const Scope* const
                 else if (var && var->mType == Variables::pointer &&
                          Token::Match(start, "%name% =") &&
                          findAllocFuncCallToken(start->next()->astOperand2(), mSettings->library)) {
-                    bool allocate = true;
 
                     const Token *allocFuncCallToken = findAllocFuncCallToken(start->next()->astOperand2(), mSettings->library);
+                    const Library::AllocFunc *allocFunc = mSettings->library.getAllocFuncInfo(allocFuncCallToken);
+
+                    bool allocateMemory = !allocFunc || Library::ismemory(allocFunc->groupId);
 
                     if (allocFuncCallToken->str() == "new") {
                         const Token *type = allocFuncCallToken->next();
@@ -956,11 +958,11 @@ void CheckUnusedVar::checkFunctionVariableUsage_iterateScopes(const Scope* const
                         if (!type->isStandardType()) {
                             const Variable *variable = start->variable();
                             if (!variable || !isRecordTypeWithoutSideEffects(variable->type()))
-                                allocate = false;
+                                allocateMemory = false;
                         }
                     }
 
-                    if (allocate)
+                    if (allocateMemory)
                         variables.allocateMemory(varid1, tok);
                     else
                         variables.write(varid1, tok);
diff --git a/test/cfg/posix.c b/test/cfg/posix.c
index 23a0ef44b..de86d771c 100644
--- a/test/cfg/posix.c
+++ b/test/cfg/posix.c
@@ -197,6 +197,7 @@ void memleak_getaddrinfo()
 
 void memleak_mmap(int fd)
 {
+    // cppcheck-suppress unusedAllocatedMemory
     // cppcheck-suppress unreadVariable
     void *addr = mmap(NULL, 255, PROT_NONE, MAP_PRIVATE, fd, 0);
     // cppcheck-suppress memleak
diff --git a/test/cfg/python.c b/test/cfg/python.c
index 011e140b5..34aac8c41 100644
--- a/test/cfg/python.c
+++ b/test/cfg/python.c
@@ -48,6 +48,7 @@ void PyMem_Malloc_memleak()
 
 void PyMem_Malloc_mismatchAllocDealloc()
 {
+    // cppcheck-suppress unusedAllocatedMemory
     char * pBuf1 = PyMem_Malloc(10);
     // cppcheck-suppress mismatchAllocDealloc
     free(pBuf1);
diff --git a/test/cfg/std.c b/test/cfg/std.c
index 49bc0f43f..211ac393b 100644
--- a/test/cfg/std.c
+++ b/test/cfg/std.c
@@ -87,6 +87,7 @@ void bufferAccessOutOfBounds(void)
 
 void memleak_aligned_alloc(void)
 {
+    // cppcheck-suppress unusedAllocatedMemory
     // cppcheck-suppress unreadVariable
     char * alignedBuf = aligned_alloc(8, 16);
     // cppcheck-suppress memleak
@@ -1118,6 +1119,7 @@ void uninitvar_calloc(void)
 {
     size_t nitems;
     size_t size;
+    // cppcheck-suppress unusedAllocatedMemory
     // cppcheck-suppress uninitvar
     int * p = (int*) calloc(nitems, size);
     free(p);
@@ -2598,6 +2600,7 @@ void uninitvar_longjmp(void)
 void uninitvar_malloc(void)
 {
     size_t size;
+    // cppcheck-suppress unusedAllocatedMemory
     // cppcheck-suppress uninitvar
     int *p = (int*)malloc(size);
     free(p);
diff --git a/test/cfg/windows.cpp b/test/cfg/windows.cpp
index 7f0ce21ff..33a3c8bb1 100644
--- a/test/cfg/windows.cpp
+++ b/test/cfg/windows.cpp
@@ -403,6 +403,7 @@ void nullPointer()
 
 void memleak_malloca()
 {
+    // cppcheck-suppress unusedAllocatedMemory
     // cppcheck-suppress unreadVariable
     void *pMem = _malloca(10);
     // cppcheck-suppress memleak