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// RUN: %clangxx_tsan -O0 %s -o %t && %run %t 2>&1 | FileCheck %s
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
#include "test.h"
#include <setjmp.h>
__attribute__((noinline)) void throws_int() {
throw 42;
}
__attribute__((noinline)) void callee_throws() {
try {
throws_int();
} catch (int) { // NOLINT
fprintf(stderr, "callee_throws caught exception\n");
}
}
__attribute__((noinline)) void throws_catches_rethrows() {
try {
throws_int();
} catch (int) { // NOLINT
fprintf(stderr, "throws_catches_rethrows caught exception\n");
throw;
}
}
__attribute__((noinline)) void callee_rethrows() {
try {
throws_catches_rethrows();
} catch (int) { // NOLINT
fprintf(stderr, "callee_rethrows caught exception\n");
}
}
__attribute__((noinline)) void throws_and_catches() {
try {
throws_int();
} catch (int) { // NOLINT
fprintf(stderr, "throws_and_catches caught exception\n");
}
}
__attribute__((noinline)) void nested_try() {
try {
try {
throws_int();
} catch (double) { // NOLINT
fprintf(stderr, "nested_try inner block caught exception\n");
}
} catch (int) { // NOLINT
fprintf(stderr, "nested_try outer block caught exception\n");
}
}
__attribute__((noinline)) void nested_try2() {
try {
try {
throws_int();
} catch (int) { // NOLINT
fprintf(stderr, "nested_try inner block caught exception\n");
}
} catch (double) { // NOLINT
fprintf(stderr, "nested_try outer block caught exception\n");
}
}
class ClassWithDestructor {
public:
ClassWithDestructor() {
fprintf(stderr, "ClassWithDestructor\n");
}
~ClassWithDestructor() {
fprintf(stderr, "~ClassWithDestructor\n");
}
};
__attribute__((noinline)) void local_object_then_throw() {
ClassWithDestructor obj;
throws_int();
}
__attribute__((noinline)) void cpp_object_with_destructor() {
try {
local_object_then_throw();
} catch (int) { // NOLINT
fprintf(stderr, "cpp_object_with_destructor caught exception\n");
}
}
__attribute__((noinline)) void recursive_call(long n) {
if (n > 0) {
recursive_call(n - 1);
} else {
throws_int();
}
}
__attribute__((noinline)) void multiframe_unwind() {
try {
recursive_call(5);
} catch (int) { // NOLINT
fprintf(stderr, "multiframe_unwind caught exception\n");
}
}
__attribute__((noinline)) void longjmp_unwind() {
jmp_buf env;
int i = setjmp(env);
if (i != 0) {
fprintf(stderr, "longjmp_unwind jumped\n");
return;
}
try {
longjmp(env, 42);
} catch (int) { // NOLINT
fprintf(stderr, "longjmp_unwind caught exception\n");
}
}
__attribute__((noinline)) void recursive_call_longjmp(jmp_buf env, long n) {
if (n > 0) {
recursive_call_longjmp(env, n - 1);
} else {
longjmp(env, 42);
}
}
__attribute__((noinline)) void longjmp_unwind_multiple_frames() {
jmp_buf env;
int i = setjmp(env);
if (i != 0) {
fprintf(stderr, "longjmp_unwind_multiple_frames jumped\n");
return;
}
try {
recursive_call_longjmp(env, 5);
} catch (int) { // NOLINT
fprintf(stderr, "longjmp_unwind_multiple_frames caught exception\n");
}
}
#define CHECK_SHADOW_STACK(val) \
fprintf(stderr, (val == __tsan_testonly_shadow_stack_current_size() \
? "OK.\n" \
: "Shadow stack leak!\n"));
int main(int argc, const char * argv[]) {
fprintf(stderr, "Hello, World!\n");
unsigned long shadow_stack_size = __tsan_testonly_shadow_stack_current_size();
throws_and_catches();
CHECK_SHADOW_STACK(shadow_stack_size);
callee_throws();
CHECK_SHADOW_STACK(shadow_stack_size);
callee_rethrows();
CHECK_SHADOW_STACK(shadow_stack_size);
nested_try();
CHECK_SHADOW_STACK(shadow_stack_size);
nested_try2();
CHECK_SHADOW_STACK(shadow_stack_size);
cpp_object_with_destructor();
CHECK_SHADOW_STACK(shadow_stack_size);
multiframe_unwind();
CHECK_SHADOW_STACK(shadow_stack_size);
longjmp_unwind();
CHECK_SHADOW_STACK(shadow_stack_size);
longjmp_unwind_multiple_frames();
CHECK_SHADOW_STACK(shadow_stack_size);
return 0;
}
// CHECK: Hello, World!
// CHECK-NOT: Shadow stack leak
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