fix lsan issue

Author: sbc100

.circleci/config.yml

@@ -515,6 +515,7 @@ jobs:
             asan.test_externref_emjs_dynlink
             asan.test_asyncify_longjmp
             asan.test_pthread_run_on_main_thread
+            lsan.test_dylink_dso_needed
             lsan.test_stdio_locking
             lsan.test_dlfcn_basic
             lsan.test_pthread_create

src/library.js

@@ -1575,20 +1575,24 @@ addToLibrary({
 #if USE_ASAN || USE_LSAN || UBSAN_RUNTIME
   // When lsan or asan is enabled withBuiltinMalloc temporarily replaces calls
   // to malloc, free, and memalign.
-  $withBuiltinMalloc__deps: ['emscripten_builtin_malloc', 'emscripten_builtin_free', 'emscripten_builtin_memalign'
-                            ],
+  $withBuiltinMalloc__deps: [
+    'emscripten_builtin_malloc', 'emscripten_builtin_free', 'emscripten_builtin_memalign', 'emscripten_builtin_calloc'
+  ],
   $withBuiltinMalloc__docs: '/** @suppress{checkTypes} */',
   $withBuiltinMalloc: (func) => {
     var prev_malloc = typeof _malloc != 'undefined' ? _malloc : undefined;
+    var prev_calloc = typeof _calloc != 'undefined' ? _calloc : undefined;
     var prev_memalign = typeof _memalign != 'undefined' ? _memalign : undefined;
     var prev_free = typeof _free != 'undefined' ? _free : undefined;
     _malloc = _emscripten_builtin_malloc;
+    _calloc = _emscripten_builtin_calloc;
     _memalign = _emscripten_builtin_memalign;
     _free = _emscripten_builtin_free;
     try {
       return func();
     } finally {
       _malloc = prev_malloc;
+      _calloc = prev_calloc;
       _memalign = prev_memalign;
       _free = prev_free;
     }

system/include/emscripten/heap.h

@@ -42,6 +42,7 @@ size_t emscripten_get_heap_max(void);
 // dlmalloc and emmalloc.
 void *emscripten_builtin_memalign(size_t alignment, size_t size);
 void *emscripten_builtin_malloc(size_t size);
+void *emscripten_builtin_calloc(size_t nmemb, size_t size);
 void emscripten_builtin_free(void *ptr);
 
 #ifdef __cplusplus

system/lib/dlmalloc.c

@@ -6083,6 +6083,7 @@ int mspace_mallopt(int param_number, int value) {
 // This allows an easy mechanism for hooking into memory allocation.
 #if defined(__EMSCRIPTEN__) && !ONLY_MSPACES
 extern __typeof(malloc) emscripten_builtin_malloc __attribute__((alias("dlmalloc")));
+extern __typeof(calloc) emscripten_builtin_calloc __attribute__((alias("dlcalloc")));
 extern __typeof(free) emscripten_builtin_free __attribute__((alias("dlfree")));
 extern __typeof(memalign) emscripten_builtin_memalign __attribute__((alias("dlmemalign")));
 #endif

system/lib/emmalloc.c

@@ -1140,8 +1140,9 @@ void *emmalloc_calloc(size_t num, size_t size) {
   }
   return ptr;
 }
-EMMALLOC_ALIAS(__libc_calloc, emmalloc_calloc);
-EMMALLOC_ALIAS(calloc,        emmalloc_calloc);
+EMMALLOC_ALIAS(emscripten_builtin_calloc, emmalloc_calloc);
+EMMALLOC_ALIAS(__libc_calloc,             emmalloc_calloc);
+EMMALLOC_ALIAS(calloc,                    emmalloc_calloc);
 
 static int count_linked_list_size(Region *list) {
   int size = 1;

tools/emscripten.py

@@ -1022,6 +1022,7 @@ def create_pointer_conversion_wrappers(metadata):
     'sbrk': 'pP',
     '_emscripten_stack_alloc': 'pp',
     'emscripten_builtin_malloc': 'pp',
+    'emscripten_builtin_calloc': 'ppp',
     'malloc': 'pp',
     'calloc': 'ppp',
     'webidl_malloc': 'pp',