shared-lib-test.cc revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
1// RUN: %clangxx_asan -O0 -DSHARED_LIB %s -fPIC -shared -o %t-so.so
2// RUN: %clangxx_asan -O0 %s -ldl -o %t && not %run %t 2>&1 | FileCheck %s
3// RUN: %clangxx_asan -O1 -DSHARED_LIB %s -fPIC -shared -o %t-so.so
4// RUN: %clangxx_asan -O1 %s -ldl -o %t && not %run %t 2>&1 | FileCheck %s
5// RUN: %clangxx_asan -O2 -DSHARED_LIB %s -fPIC -shared -o %t-so.so
6// RUN: %clangxx_asan -O2 %s -ldl -o %t && not %run %t 2>&1 | FileCheck %s
7// RUN: %clangxx_asan -O3 -DSHARED_LIB %s -fPIC -shared -o %t-so.so
8// RUN: %clangxx_asan -O3 %s -ldl -o %t && not %run %t 2>&1 | FileCheck %s
9
10#if !defined(SHARED_LIB)
11#include <dlfcn.h>
12#include <stdio.h>
13#include <string.h>
14
15#include <string>
16
17using std::string;
18
19typedef void (fun_t)(int x);
20
21int main(int argc, char *argv[]) {
22  string path = string(argv[0]) + "-so.so";
23  printf("opening %s ... \n", path.c_str());
24  void *lib = dlopen(path.c_str(), RTLD_NOW);
25  if (!lib) {
26    printf("error in dlopen(): %s\n", dlerror());
27    return 1;
28  }
29  fun_t *inc = (fun_t*)dlsym(lib, "inc");
30  if (!inc) return 1;
31  printf("ok\n");
32  inc(1);
33  inc(-1);  // BOOM
34  // CHECK: {{.*ERROR: AddressSanitizer: global-buffer-overflow}}
35  // CHECK: {{READ of size 4 at 0x.* thread T0}}
36  // CHECK: {{    #0 0x.*}}
37  // CHECK: {{    #1 0x.* in main .*shared-lib-test.cc:}}[[@LINE-4]]
38  return 0;
39}
40#else  // SHARED_LIBS
41#include <stdio.h>
42#include <string.h>
43
44int pad[10];
45int GLOB[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
46
47extern "C"
48void inc(int index) {
49  GLOB[index]++;
50}
51
52extern "C"
53void inc2(int *a, int index) {
54  a[index]++;
55}
56#endif  // SHARED_LIBS
57