1 // RUN: %clangxx -g -O0 %s -o %t 2 3 // Check that trying to dlopen() the ASan dylib fails. 4 // We explictly set `abort_on_error=0` because 5 // - By default the lit config sets this but we don't want this 6 // test to implicitly depend on this. 7 // - It avoids requiring `--crash` to be passed to `not`. 8 // RUN: APPLE_ASAN_INIT_FOR_DLOPEN=0 %env_asan_opts=abort_on_error=0 not \ 9 // RUN: %run %t %shared_libasan 2>&1 | \ 10 // RUN: FileCheck -check-prefix=CHECK-DL-OPEN-FAIL %s 11 // RUN: env -u APPLE_ASAN_INIT_FOR_DLOPEN %env_asan_opts=abort_on_error=0 not \ 12 // RUN: %run %t %shared_libasan 2>&1 | \ 13 // RUN: FileCheck -check-prefix=CHECK-DL-OPEN-FAIL %s 14 15 // Check that we can successfully dlopen the ASan dylib when we set the right 16 // environment variable. 17 // RUN: env APPLE_ASAN_INIT_FOR_DLOPEN=1 %run %t %shared_libasan 2>&1 | \ 18 // RUN: FileCheck -check-prefix=CHECK-DL-OPEN-SUCCESS %s 19 20 #include <dlfcn.h> 21 #include <stdio.h> 22 23 // CHECK-DL-OPEN-FAIL: ERROR: Interceptors are not working 24 // CHECK-SAME-DL-OPEN-FAIL: Please launch the executable with: DYLD_INSERT_LIBRARIES={{.+}}/libclang_rt.asan_{{.+}}_dynamic.dylib 25 26 int main(int argc, char **argv) { 27 if (argc != 2) { 28 fprintf(stderr, "Usage: %s <dylib_path>\n", argv[0]); 29 return 1; 30 } 31 const char *dylib_path = argv[1]; 32 void *handle = dlopen(dylib_path, RTLD_LAZY); 33 if (!handle) { 34 fprintf(stderr, "Failed to dlopen: %s\n", dlerror()); 35 return 1; 36 } 37 // Make sure we can find a function we expect to be in the dylib. 38 void *fn = dlsym(handle, "__sanitizer_mz_size"); 39 if (!fn) { 40 fprintf(stderr, "Failed to get symbol: %s\n", dlerror()); 41 return 1; 42 } 43 // TODO(dliew): Actually call a function from the dylib that is safe to call. 44 // CHECK-DL-OPEN-SUCCESS: DONE 45 printf("DONE\n"); 46 return 0; 47 } 48