rtlallocateheap_flags_fallback.cpp
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// RUN: %clang_cl_asan -Od %s -Fe%t /MD
// RUN: %env_asan_opts=windows_hook_rtl_allocators=true %run %t 2>&1 | FileCheck %s
// UNSUPPORTED: asan-64-bits
// REQUIRES: asan-rtl-heap-interception
#include <assert.h>
#include <stdio.h>
#include <windows.h>
extern "C" int __sanitizer_get_ownership(const volatile void *p);
using AllocateFunctionPtr = PVOID(__stdcall *)(PVOID, ULONG, SIZE_T);
using FreeFunctionPtr = PVOID(__stdcall *)(PVOID, ULONG, PVOID);
int main() {
HMODULE NtDllHandle = GetModuleHandle("ntdll.dll");
if (!NtDllHandle) {
puts("Couldn't load ntdll??");
return -1;
}
auto RtlAllocateHeap_ptr = (AllocateFunctionPtr)GetProcAddress(NtDllHandle, "RtlAllocateHeap");
if (RtlAllocateHeap_ptr == 0) {
puts("Couldn't RtlAllocateHeap");
return -1;
}
auto RtlFreeHeap_ptr = (FreeFunctionPtr)GetProcAddress(NtDllHandle, "RtlFreeHeap");
if (RtlFreeHeap_ptr == 0) {
puts("Couldn't RtlFreeHeap");
return -1;
}
char *winbuf;
char *asanbuf;
winbuf = (char *)RtlAllocateHeap_ptr(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS, 32),
asanbuf = (char *)RtlAllocateHeap_ptr(GetProcessHeap(), 0, 32),
winbuf[0] = 'a';
assert(!__sanitizer_get_ownership(winbuf));
assert(__sanitizer_get_ownership(asanbuf));
RtlFreeHeap_ptr(GetProcessHeap(), 0, winbuf);
RtlFreeHeap_ptr(GetProcessHeap(), 0, asanbuf);
puts("Okay");
// CHECK: Okay
}