1*673dc3d4SNico Weber // Check that --gc-sections does not throw away (or localize) parts of sanitizer
2*673dc3d4SNico Weber // interface.
3*673dc3d4SNico Weber // RUN: %clang_asan %s -Wl,--gc-sections -ldl -o %t
4*673dc3d4SNico Weber // RUN: %clang_asan %s -DBUILD_SO -fPIC -o %t-so.so -shared
5*673dc3d4SNico Weber // RUN: %run %t 2>&1
6*673dc3d4SNico Weber
7*673dc3d4SNico Weber // REQUIRES: asan-64-bits
8*673dc3d4SNico Weber
9*673dc3d4SNico Weber #ifndef BUILD_SO
10*673dc3d4SNico Weber #include <assert.h>
11*673dc3d4SNico Weber #include <dlfcn.h>
12*673dc3d4SNico Weber #include <stdio.h>
13*673dc3d4SNico Weber #include <stdlib.h>
14*673dc3d4SNico Weber
main(int argc,char * argv[])15*673dc3d4SNico Weber int main(int argc, char *argv[]) {
16*673dc3d4SNico Weber char path[4096];
17*673dc3d4SNico Weber snprintf(path, sizeof(path), "%s-so.so", argv[0]);
18*673dc3d4SNico Weber
19*673dc3d4SNico Weber void *handle = dlopen(path, RTLD_LAZY);
20*673dc3d4SNico Weber if (!handle) fprintf(stderr, "%s\n", dlerror());
21*673dc3d4SNico Weber assert(handle != 0);
22*673dc3d4SNico Weber
23*673dc3d4SNico Weber typedef void (*F)();
24*673dc3d4SNico Weber F f = (F)dlsym(handle, "call_rtl_from_dso");
25*673dc3d4SNico Weber printf("%s\n", dlerror());
26*673dc3d4SNico Weber assert(dlerror() == 0);
27*673dc3d4SNico Weber f();
28*673dc3d4SNico Weber
29*673dc3d4SNico Weber dlclose(handle);
30*673dc3d4SNico Weber return 0;
31*673dc3d4SNico Weber }
32*673dc3d4SNico Weber
33*673dc3d4SNico Weber #else // BUILD_SO
34*673dc3d4SNico Weber
35*673dc3d4SNico Weber #include <sanitizer/asan_interface.h>
call_rtl_from_dso()36*673dc3d4SNico Weber extern "C" void call_rtl_from_dso() {
37*673dc3d4SNico Weber volatile int32_t x;
38*673dc3d4SNico Weber volatile int32_t y = __sanitizer_unaligned_load32((void *)&x);
39*673dc3d4SNico Weber }
40*673dc3d4SNico Weber
41*673dc3d4SNico Weber #endif // BUILD_SO
42