69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
// Test that dynamically allocated TLS space is included in the root set.
|
|
|
|
// This is known to be broken with glibc-2.27+ but it should pass with Bionic
|
|
// https://bugs.llvm.org/show_bug.cgi?id=37804
|
|
// XFAIL: glibc-2.27
|
|
|
|
// RUN: %clangxx %s -DBUILD_DSO -fPIC -shared -o %t-so.so
|
|
// RUN: %clangxx_lsan %s -o %t
|
|
// RUN: %env_lsan_opts="report_objects=1:use_stacks=0:use_registers=0:use_ld_allocations=0:use_tls=0" not %run %t 2>&1 | FileCheck %s
|
|
// RUN: %env_lsan_opts="report_objects=1:use_stacks=0:use_registers=0:use_ld_allocations=0:use_tls=1" %run %t 2>&1
|
|
// RUN: %env_lsan_opts="" %run %t 2>&1
|
|
// UNSUPPORTED: arm,powerpc,i386-linux && !android
|
|
|
|
#ifndef BUILD_DSO
|
|
#include <assert.h>
|
|
#include <dlfcn.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string>
|
|
#include "sanitizer_common/print_address.h"
|
|
|
|
int main(int argc, char *argv[]) {
|
|
std::string path = std::string(argv[0]) + "-so.so";
|
|
|
|
// Clear any previous errors. On Android, the dynamic loader can have some
|
|
// left over dlerror() messages due to a missing symbol resolution for a
|
|
// deprecated malloc function.
|
|
dlerror();
|
|
|
|
void *handle = dlopen(path.c_str(), RTLD_LAZY);
|
|
assert(handle != 0);
|
|
typedef void **(* store_t)(void *p);
|
|
store_t StoreToTLS = (store_t)dlsym(handle, "StoreToTLS");
|
|
|
|
// Sometimes dlerror() occurs when we broke the interceptors.
|
|
// Add the message here to make the error more obvious.
|
|
const char *dlerror_msg = dlerror();
|
|
if (dlerror_msg != nullptr) {
|
|
fprintf(stderr, "DLERROR: %s\n", dlerror_msg);
|
|
fflush(stderr);
|
|
abort();
|
|
}
|
|
void *p = malloc(1337);
|
|
// If we don't know about dynamic TLS, we will return a false leak above.
|
|
void **p_in_tls = StoreToTLS(p);
|
|
assert(*p_in_tls == p);
|
|
print_address("Test alloc: ", 1, p);
|
|
return 0;
|
|
}
|
|
// CHECK: Test alloc: [[ADDR:0x[0-9,a-f]+]]
|
|
// CHECK: LeakSanitizer: detected memory leaks
|
|
// CHECK: [[ADDR]] (1337 bytes)
|
|
// CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer:
|
|
|
|
#else // BUILD_DSO
|
|
// A loadable module with a large thread local section, which would require
|
|
// allocation of a new TLS storage chunk when loaded with dlopen(). We use it
|
|
// to test the reachability of such chunks in LSan tests.
|
|
|
|
// This must be large enough that it doesn't fit into preallocated static TLS
|
|
// space (see STATIC_TLS_SURPLUS in glibc).
|
|
__thread void *huge_thread_local_array[(1 << 20) / sizeof(void *)];
|
|
|
|
extern "C" void **StoreToTLS(void *p) {
|
|
huge_thread_local_array[0] = p;
|
|
return &huge_thread_local_array[0];
|
|
}
|
|
#endif // BUILD_DSO
|