15d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// RUN: %clang_cl_asan -O0 %p/dll_host.cc -Fe%t 25d71de26cedae3dafc17449fe0182045c0bd20e8Stephen Hines// RUN: %clang_cl_asan -LD -O0 %s -Fe%t.dll 32d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: not %run %t %t.dll 2>&1 | FileCheck %s 42d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines 52d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines#include <malloc.h> 62d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hinesextern "C" __declspec(dllexport) 72d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hinesint test_function() { 82d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines char *buffer = (char*)malloc(42); 92d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines buffer[-1] = 42; 102d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK: AddressSanitizer: heap-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] 112d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK: WRITE of size 1 at [[ADDR]] thread T0 122d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK-NEXT: test_function {{.*}}dll_malloc_left_oob.cc:[[@LINE-3]] 132d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK-NEXT: main {{.*}}dll_host.cc 142d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// 152d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK: [[ADDR]] is located 1 bytes to the left of 42-byte region 162d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK-LABEL: allocated by thread T0 here: 172d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK-NEXT: malloc 182d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK-NEXT: test_function {{.*}}dll_malloc_left_oob.cc:[[@LINE-10]] 192d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK-NEXT: main {{.*}}dll_host.cc 202d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// CHECK-LABEL: SUMMARY 212d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines free(buffer); 222d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines return 0; 232d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines} 24