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      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 // XFAIL: arm-linux-gnueabi
     10 
     11 #if !defined(SHARED_LIB)
     12 #include <dlfcn.h>
     13 #include <stdio.h>
     14 #include <string.h>
     15 
     16 #include <string>
     17 
     18 using std::string;
     19 
     20 typedef void (fun_t)(int x);
     21 
     22 int main(int argc, char *argv[]) {
     23   string path = string(argv[0]) + "-so.so";
     24   printf("opening %s ... \n", path.c_str());
     25   void *lib = dlopen(path.c_str(), RTLD_NOW);
     26   if (!lib) {
     27     printf("error in dlopen(): %s\n", dlerror());
     28     return 1;
     29   }
     30   fun_t *inc = (fun_t*)dlsym(lib, "inc");
     31   if (!inc) return 1;
     32   printf("ok\n");
     33   inc(1);
     34   inc(-1);  // BOOM
     35   // CHECK: {{.*ERROR: AddressSanitizer: global-buffer-overflow}}
     36   // CHECK: {{READ of size 4 at 0x.* thread T0}}
     37   // CHECK: {{    #0 0x.*}}
     38   // CHECK: {{    #1 0x.* in main .*shared-lib-test.cc:}}[[@LINE-4]]
     39   return 0;
     40 }
     41 #else  // SHARED_LIBS
     42 #include <stdio.h>
     43 #include <string.h>
     44 
     45 int pad[10];
     46 int GLOB[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
     47 
     48 extern "C"
     49 void inc(int index) {
     50   GLOB[index]++;
     51 }
     52 
     53 extern "C"
     54 void inc2(int *a, int index) {
     55   a[index]++;
     56 }
     57 #endif  // SHARED_LIBS
     58