forked from OSchip/llvm-project
68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
// Test for ASAN_OPTIONS=start_deactivated=1 mode.
|
|
// Main executable is uninstrumented, but linked to ASan runtime. The shared
|
|
// library is instrumented. Memory errors before dlopen are not detected.
|
|
|
|
// RUN: %clangxx_asan -O0 -DSHARED_LIB %s -fPIC -shared -o %t-so.so
|
|
// RUN: %clangxx -O0 %s -c -o %t.o
|
|
// RUN: %clangxx_asan -O0 %t.o -ldl -o %t
|
|
// RUN: ASAN_OPTIONS=start_deactivated=1 not %run %t 2>&1 | FileCheck %s
|
|
|
|
#if !defined(SHARED_LIB)
|
|
#include <dlfcn.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include <string>
|
|
|
|
#include "sanitizer/asan_interface.h"
|
|
|
|
void test_malloc_shadow() {
|
|
char *p = (char *)malloc(100);
|
|
char *q = (char *)__asan_region_is_poisoned(p + 95, 8);
|
|
fprintf(stderr, "=%zd=\n", q ? q - (p + 95) : -1);
|
|
free(p);
|
|
}
|
|
|
|
typedef void (*Fn)();
|
|
|
|
int main(int argc, char *argv[]) {
|
|
test_malloc_shadow();
|
|
// CHECK: =-1=
|
|
|
|
std::string path = std::string(argv[0]) + "-so.so";
|
|
void *dso = dlopen(path.c_str(), RTLD_NOW);
|
|
if (!dso) {
|
|
fprintf(stderr, "dlopen failed: %s\n", dlerror());
|
|
return 1;
|
|
}
|
|
|
|
test_malloc_shadow();
|
|
// CHECK: =5=
|
|
|
|
void *fn = dlsym(dso, "do_another_bad_thing");
|
|
if (!fn) {
|
|
fprintf(stderr, "dlsym failed: %s\n", dlerror());
|
|
return 1;
|
|
}
|
|
|
|
((Fn)fn)();
|
|
// CHECK: AddressSanitizer: heap-buffer-overflow
|
|
// CHECK: READ of size 1
|
|
// CHECK: {{#0 .* in do_another_bad_thing}}
|
|
// CHECK: is located 5 bytes to the right of 100-byte region
|
|
// CHECK: in do_another_bad_thing
|
|
|
|
return 0;
|
|
}
|
|
#else // SHARED_LIB
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
extern "C" void do_another_bad_thing() {
|
|
char *volatile p = (char *)malloc(100);
|
|
printf("%hhx\n", p[105]);
|
|
}
|
|
#endif // SHARED_LIB
|