Fix lsan test suite

With this change the entire `lsan` suite passes.

Author: sbc100

system/lib/compiler-rt/lib/lsan/lsan_interceptors.cpp

@@ -394,6 +394,7 @@ INTERCEPTOR(int, pthread_atfork, void (*prepare)(), void (*parent)(),
 #endif
 
 #if SANITIZER_EMSCRIPTEN
+#define __ATTRP_C11_THREAD ((void*)(uptr)-1)
 extern "C" {
   int emscripten_builtin_pthread_create(void *thread, void *attr,
                                         void *(*callback)(void *), void *arg);
@@ -452,7 +453,7 @@ INTERCEPTOR(int, pthread_create, void *th, void *attr,
   ENSURE_LSAN_INITED;
   EnsureMainThreadIDIsCorrect();
   __sanitizer_pthread_attr_t myattr;
-  if (!attr) {
+  if (!attr || attr == __ATTRP_C11_THREAD) {
     pthread_attr_init(&myattr);
     attr = &myattr;
   }

tests/core/test_dynamic_cast.cpp

@@ -16,4 +16,6 @@ struct Derived : Support {};
 int main() {
   Support* p = new Derived;
   dynamic_cast<Derived*>(p)->f();
+  delete p;
+  return 0;
 }

tests/test_core.py

@@ -182,7 +182,8 @@ def can_do_standalone(self):
       not self.get_setting('MINIMAL_RUNTIME') and \
       not self.get_setting('SAFE_HEAP') and \
       not self.get_setting('MEMORY64') and \
-      '-fsanitize=address' not in self.emcc_args
+      '-fsanitize=address' not in self.emcc_args and \
+      '-fsanitize=leak' not in self.emcc_args
 
 
 def also_with_wasmfs(func):
@@ -660,6 +661,7 @@ def test_align64(self):
 ''')
 
   @no_asan('asan errors on corner cases we check')
+  @no_lsan('lsan errors on corner cases we check')
   def test_aligned_alloc(self):
     self.do_runf(test_file('test_aligned_alloc.c'), '',
                  emcc_args=['-Wno-non-power-of-two-alignment'])
@@ -873,6 +875,7 @@ def test_stack_placement(self):
     self.do_core_test('test_stack_placement.c')
 
   @no_asan('asan does not support main modules')
+  @no_lsan('asan does not support main modules')
   @no_wasm2js('MAIN_MODULE support')
   def test_stack_placement_pic(self):
     self.set_setting('TOTAL_STACK', 1024)
@@ -1282,7 +1285,8 @@ def test_exceptions_allowed(self):
     # empty list acts the same as fully disabled
     self.assertEqual(empty_size, disabled_size)
     # big change when we disable exception catching of the function
-    self.assertGreater(size - empty_size, 0.01 * size)
+    if '-fsanitize=leak' not in self.emcc_args:
+      self.assertGreater(size - empty_size, 0.01 * size)
     # full disable can remove a little bit more
     self.assertLess(disabled_size, fake_size)
 
@@ -1567,6 +1571,7 @@ def test_segfault(self):
 
         struct Classey {
           virtual void doIt() = 0;
+          virtual ~Classey() = default;
         };
 
         struct D1 : Classey {
@@ -1581,11 +1586,11 @@ def test_segfault(self):
           return 0;
         });
 
-        int main(int argc, char **argv)
-        {
+        int main(int argc, char **argv) {
           Classey *p = argc == 100 ? new D1() : (Classey*)%s;
 
           p->doIt();
+          delete p;
 
           return 0;
         }
@@ -1767,16 +1772,17 @@ def test_set_align(self):
 
     self.do_core_test('test_set_align.c')
 
-  @no_asan('EXPORT_ALL is not compatible with Asan')
   def test_emscripten_api(self):
     self.set_setting('EXPORTED_FUNCTIONS', ['_main', '_save_me_aimee'])
     self.do_core_test('test_emscripten_api.cpp')
 
-    # test EXPORT_ALL
-    self.set_setting('EXPORTED_FUNCTIONS', [])
-    self.set_setting('EXPORT_ALL')
-    self.set_setting('LINKABLE')
-    self.do_core_test('test_emscripten_api.cpp')
+    # Sanitizers are not compatible with LINKABLE (dynamic linking.
+    if not is_sanitizing(self.emcc_args):
+      # test EXPORT_ALL
+      self.set_setting('EXPORTED_FUNCTIONS', [])
+      self.set_setting('EXPORT_ALL')
+      self.set_setting('LINKABLE')
+      self.do_core_test('test_emscripten_api.cpp')
 
   def test_emscripten_run_script_string_int(self):
     src = r'''
@@ -1921,7 +1927,6 @@ def test_em_asm_2(self):
   # Tests various different ways to invoke the MAIN_THREAD_EM_ASM(), MAIN_THREAD_EM_ASM_INT() and MAIN_THREAD_EM_ASM_DOUBLE() macros.
   # This test is identical to test_em_asm_2, just search-replaces EM_ASM to MAIN_THREAD_EM_ASM on the test file. That way if new
   # test cases are added to test_em_asm_2.cpp for EM_ASM, they will also get tested in MAIN_THREAD_EM_ASM form.
-  @no_asan('Cannot use ASan: test depends exactly on heap size')
   def test_main_thread_em_asm(self):
     src = read_file(test_file('core/test_em_asm_2.cpp'))
     create_file('src.cpp', src.replace('EM_ASM', 'MAIN_THREAD_EM_ASM'))
@@ -1972,10 +1977,8 @@ def test_em_asm_direct(self):
     'linked_c': (['-s', 'MAIN_MODULE'], True),
   })
   def test_em_js(self, args, force_c):
-    if 'MAIN_MODULE' in args and not self.is_wasm():
-      self.skipTest('main module support for non-wasm')
-    if '-fsanitize=address' in self.emcc_args:
-      self.skipTest('no dynamic library support in asan yet')
+    if 'MAIN_MODULE' in args:
+      self.check_dylink()
     self.emcc_args += args + ['-s', 'EXPORTED_FUNCTIONS=_main,_malloc']
 
     self.do_core_test('test_em_js.cpp', force_c=force_c)
@@ -2108,6 +2111,7 @@ def test_memorygrowth_3_force_fail_reallocBuffer(self):
     'grow': (['-sALLOW_MEMORY_GROWTH', '-sMAXIMUM_MEMORY=18MB'],)
   })
   @no_asan('requires more memory when growing')
+  @no_lsan('requires more memory when growing')
   @no_memory64('does not fail under wasm64')
   def test_aborting_new(self, args):
     # test that C++ new properly errors if we fail to malloc when growth is
@@ -2117,6 +2121,7 @@ def test_aborting_new(self, args):
 
   @no_wasm2js('no WebAssembly.Memory()')
   @no_asan('ASan alters the memory size')
+  @no_lsan('LSan alters the memory size')
   def test_module_wasm_memory(self):
     self.emcc_args += ['--pre-js', test_file('core/test_module_wasm_memory.js')]
     self.set_setting('IMPORTED_MEMORY')
@@ -2402,6 +2407,7 @@ def test_atexit(self):
       self.set_setting('EXIT_RUNTIME')
     self.do_core_test('test_atexit.c')
 
+  @no_lsan('https://github.com/emscripten-core/emscripten/issues/15988')
   def test_atexit_threads_stub(self):
     # also tests thread exit (__cxa_thread_atexit)
     self.set_setting('EXIT_RUNTIME')
@@ -5288,6 +5294,7 @@ def test_utf8_invalid(self):
   def test_minimal_runtime_utf8_invalid(self):
     self.set_setting('EXPORTED_RUNTIME_METHODS', ['UTF8ToString', 'stringToUTF8'])
     self.set_setting('MINIMAL_RUNTIME')
+    self.emcc_args += ['--pre-js', test_file('minimal_runtime_exit_handling.js')]
     for decoder_mode in [False, True]:
       self.set_setting('TEXTDECODER', decoder_mode)
       print(str(decoder_mode))
@@ -5845,6 +5852,7 @@ def test_whets(self):
   # node is slower, and fail on 64-bit
   @require_v8
   @no_asan('depends on the specifics of memory size, which for asan we are forced to increase')
+  @no_lsan('depends on the specifics of memory size, which for lsan we are forced to increase')
   def test_dlmalloc_inline(self):
     # needed with typed arrays
     self.set_setting('INITIAL_MEMORY', '128mb')
@@ -5856,6 +5864,7 @@ def test_dlmalloc_inline(self):
   # node is slower, and fail on 64-bit
   @require_v8
   @no_asan('depends on the specifics of memory size, which for asan we are forced to increase')
+  @no_lsan('depends on the specifics of memory size, which for lsan we are forced to increase')
   def test_dlmalloc(self):
     # needed with typed arrays
     self.set_setting('INITIAL_MEMORY', '128mb')
@@ -5887,11 +5896,13 @@ def test_dlmalloc(self):
 
   # Tests that a large allocation should gracefully fail
   @no_asan('the memory size limit here is too small for asan')
+  @no_lsan('the memory size limit here is too small for lsan')
   def test_dlmalloc_large(self):
     self.emcc_args += ['-s', 'ABORTING_MALLOC=0', '-s', 'ALLOW_MEMORY_GROWTH=1', '-s', 'MAXIMUM_MEMORY=128MB']
     self.do_runf(test_file('dlmalloc_test_large.c'), '0 0 0 1')
 
   @no_asan('asan also changes malloc, and that ends up linking in new twice')
+  @no_lsan('lsan also changes malloc, and that ends up linking in new twice')
   def test_dlmalloc_partial(self):
     # present part of the symbols of dlmalloc, not all
     src = read_file(test_file('new.cpp')).replace('{{{ NEW }}}', 'new int').replace('{{{ DELETE }}}', 'delete') + '''
@@ -5905,6 +5916,7 @@ def test_dlmalloc_partial(self):
     self.do_run(src, 'new 4!\n*1,0*')
 
   @no_asan('asan also changes malloc, and that ends up linking in new twice')
+  @no_lsan('lsan also changes malloc, and that ends up linking in new twice')
   def test_dlmalloc_partial_2(self):
     if 'SAFE_HEAP' in str(self.emcc_args):
       self.skipTest('we do unsafe stuff here')
@@ -6397,7 +6409,7 @@ def do_test():
         self.set_setting('ALLOW_MEMORY_GROWTH', 0)
         do_test()
 
-    if '-fsanitize=address' in self.emcc_args:
+    if is_sanitizing(self.emcc_args):
       # In ASan mode we need a large initial memory (or else wasm-ld fails).
       # The OpenJPEG CMake will build several executables (which we need parts
       # of in our testing, see above), so we must enable the flag for them all.
@@ -7715,6 +7727,7 @@ def test_asyncify_during_exit(self):
     self.do_core_test('test_asyncify_during_exit.cpp', emcc_args=['-DNO_ASYNC'], out_suffix='_no_async')
 
   @no_asan('asyncify stack operations confuse asan')
+  @no_lsan('undefined symbol __global_base')
   @no_wasm2js('dynamic linking support in wasm2js')
   def test_asyncify_main_module(self):
     self.set_setting('ASYNCIFY', 1)
@@ -7741,7 +7754,7 @@ def test_emscripten_lazy_load_code(self, conditional):
     second_size = os.path.getsize('emscripten_lazy_load_code.wasm.lazy.wasm')
     print('first wasm size', first_size)
     print('second wasm size', second_size)
-    if not conditional and self.is_optimizing() and '-g' not in self.emcc_args:
+    if not conditional and self.is_optimizing() and '-g' not in self.emcc_args and '-fsanitize=leak' not in self.emcc_args:
       # If the call to lazy-load is unconditional, then the optimizer can dce
       # out more than half
       self.assertLess(first_size, 0.6 * second_size)
@@ -7806,6 +7819,7 @@ def verify_broken(args=['0']):
 
   # Test basic wasm2js functionality in all core compilation modes.
   @no_asan('no wasm2js support yet in asan')
+  @no_lsan('no wasm2js support yet in lsan')
   def test_wasm2js(self):
     if not self.is_wasm():
       self.skipTest('redundant to test wasm2js in wasm2js* mode')
@@ -7821,6 +7835,7 @@ def test_wasm2js(self):
       self.assertNotExists('test_hello_world.js.mem')
 
   @no_asan('no wasm2js support yet in asan')
+  @no_lsan('no wasm2js support yet in lsan')
   def test_maybe_wasm2js(self):
     if not self.is_wasm():
       self.skipTest('redundant to test wasm2js in wasm2js* mode')
@@ -7990,10 +8005,12 @@ def test_brk(self):
   # Tests that we can use the dlmalloc mallinfo() function to obtain information
   # about malloc()ed blocks and compute how much memory is used/freed.
   @no_asan('mallinfo is not part of ASan malloc')
+  @no_lsan('mallinfo is not part of LSan malloc')
   def test_mallinfo(self):
     self.do_runf(test_file('mallinfo.cpp'), 'OK.')
 
   @no_asan('cannot replace malloc/free with ASan')
+  @no_lsan('cannot replace malloc/free with LSan')
   def test_wrap_malloc(self):
     self.do_runf(test_file('wrap_malloc.cpp'), 'OK.')
 
@@ -8070,6 +8087,7 @@ def test_minimal_runtime_no_declare_asm_module_exports(self):
     self.set_setting('WASM_ASYNC_COMPILATION', 0)
     self.maybe_closure()
     self.set_setting('MINIMAL_RUNTIME')
+    self.emcc_args += ['--pre-js', test_file('minimal_runtime_exit_handling.js')]
     self.do_runf(test_file('declare_asm_module_exports.cpp'), 'jsFunction: 1')
 
   # Tests that -s MINIMAL_RUNTIME=1 works well in different build modes
@@ -8095,6 +8113,7 @@ def test_minimal_runtime_hello_world(self, args):
   @no_asan('TODO: ASan support in minimal runtime')
   def test_minimal_runtime_hello_printf(self, extra_setting):
     self.set_setting('MINIMAL_RUNTIME')
+    self.emcc_args += ['--pre-js', test_file('minimal_runtime_exit_handling.js')]
     self.set_setting(extra_setting)
     # $FS is not fully compatible with MINIMAL_RUNTIME so fails with closure
     # compiler.  lsan also pulls in $FS
@@ -8106,6 +8125,7 @@ def test_minimal_runtime_hello_printf(self, extra_setting):
   @no_asan('TODO: ASan support in minimal runtime')
   def test_minimal_runtime_safe_heap(self):
     self.set_setting('MINIMAL_RUNTIME')
+    self.emcc_args += ['--pre-js', test_file('minimal_runtime_exit_handling.js')]
     self.set_setting('SAFE_HEAP')
     # $FS is not fully compatible with MINIMAL_RUNTIME so fails with closure
     # compiler.
@@ -8118,6 +8138,7 @@ def test_minimal_runtime_safe_heap(self):
   @no_asan('TODO: ASan support in minimal runtime')
   def test_minimal_runtime_global_initializer(self):
     self.set_setting('MINIMAL_RUNTIME')
+    self.emcc_args += ['--pre-js', test_file('minimal_runtime_exit_handling.js')]
     self.maybe_closure()
     self.do_runf(test_file('test_global_initializer.cpp'), 't1 > t0: 1')
 
@@ -8128,6 +8149,7 @@ def test_return_address(self):
 
   @no_wasm2js('TODO: sanitizers in wasm2js')
   @no_asan('-fsanitize-minimal-runtime cannot be used with ASan')
+  @no_lsan('-fsanitize-minimal-runtime cannot be used with LSan')
   def test_ubsan_minimal_too_many_errors(self):
     self.emcc_args += ['-fsanitize=undefined', '-fsanitize-minimal-runtime']
     if not self.is_wasm():
@@ -8140,6 +8162,7 @@ def test_ubsan_minimal_too_many_errors(self):
 
   @no_wasm2js('TODO: sanitizers in wasm2js')
   @no_asan('-fsanitize-minimal-runtime cannot be used with ASan')
+  @no_lsan('-fsanitize-minimal-runtime cannot be used with LSan')
   def test_ubsan_minimal_errors_same_place(self):
     self.emcc_args += ['-fsanitize=undefined', '-fsanitize-minimal-runtime']
     if not self.is_wasm():
@@ -8708,6 +8731,7 @@ def test_minimal_runtime_emscripten_get_exported_function(self):
     # Could also test with -s ALLOW_TABLE_GROWTH=1
     self.set_setting('RESERVED_FUNCTION_POINTERS', 2)
     self.set_setting('MINIMAL_RUNTIME')
+    self.emcc_args += ['--pre-js', test_file('minimal_runtime_exit_handling.js')]
     self.emcc_args += ['-lexports.js']
     self.do_core_test('test_get_exported_function.cpp')
 

tests/third_party/libiberty/cp-demangle.c

@@ -4220,7 +4220,9 @@ is_gnu_v3_mangled_dtor (const char *name)
 int main(int argc, char **argv)
 {
   int status;
-  printf("*%s*\n", __cxa_demangle(argv[1], 0, 0, &status));
+  char* s = __cxa_demangle(argv[1], 0, 0, &status);
+  printf("*%s*\n", s);
+  free(s);
   return 0;
 }
 

tools/system_libs.py

@@ -1746,14 +1746,13 @@ def add_library(libname):
     add_library('libstandalonewasm')
   add_library('libc_rt')
 
-  if settings.USE_LSAN:
-    force_include.append('liblsan_rt')
-    add_library('liblsan_rt')
-
   if settings.USE_ASAN:
     force_include.append('libasan_rt')
     add_library('libasan_rt')
     add_library('libasan_js')
+  elif settings.USE_LSAN:
+    force_include.append('liblsan_rt')
+    add_library('liblsan_rt')
 
   if settings.UBSAN_RUNTIME == 1:
     add_library('libubsan_minimal_rt')