35 lines · cpp
1// RUN: %clang_cl_asan %Od %p/dll_host.cpp %Fe%t2// RUN: %clang_cl_asan %if !MSVC %{ -Wno-fortify-source %} %LD %Od %s %Fe%t.dll3// RUN: not %run %t %t.dll 2>&1 | FileCheck %s4 5// Test that it works correctly even with ICF enabled.6// RUN: %clang_cl_asan %if !MSVC %{ -Wno-fortify-source %} %LD %Od %s %Fe%t.dll \7// RUN: %if target={{.*-windows-gnu}} %{ -Wl,--gc-sections,--icf=all %} \8// RUN: %else %{ -link /OPT:REF /OPT:ICF %}9// RUN: not %run %t %t.dll 2>&1 | FileCheck %s10 11#include <stdio.h>12#include <string.h>13 14extern "C" __declspec(dllexport)15int test_function() {16 char buff1[6] = "Hello", buff2[5];17 18 memcpy(buff2, buff1, 5);19 if (buff1[2] != buff2[2])20 return 2;21 printf("Initial test OK\n");22 fflush(0);23// CHECK: Initial test OK24 25 memcpy(buff2, buff1, 6);26 // CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]27 // CHECK: WRITE of size 6 at [[ADDR]] thread T028 // CHECK-NEXT: __asan_{{.*}}{{(memcpy|memmove)}}29 // CHECK-NEXT: test_function {{.*}}dll_intercept_memcpy.cpp:[[@LINE-4]]30 // CHECK: Address [[ADDR]] is located in stack of thread T0 at offset {{.*}} in frame31 // CHECK-NEXT: test_function {{.*}}dll_intercept_memcpy.cpp32 // CHECK: 'buff2'{{.*}} <== Memory access at offset {{.*}} overflows this variable33 return 0;34}35