New submission from Evgeniy Stepanov: Following https://docs.python.org/2/c-api/init.html#Py_Finalize, I'm reinitializing embedded python interpreter multiple time in one process.
#include <Python.h> void f() { Py_Initialize(); PyRun_SimpleString("from time import time,ctime\n" "import datetime\n" "print 'Today is',ctime(time())\n"); Py_Finalize(); } int main(void) { for (int i = 0; i < 30; ++i) f(); return 0; } I see 2 sources of memory leaks: * _once_registry is never teared down. ==20144==ERROR: LeakSanitizer: detected memory leaks Direct leak of 8120 byte(s) in 29 object(s) allocated from: #0 0x4a3e38 in malloc /code/llvm/build0/../projects/compiler-rt/lib/asan/asan_malloc_linux.cc:75 #1 0x4e1524 in _PyObject_GC_Malloc build/Python-2.7.6/Modules/gcmodule.c:1499 #2 0x4e16ff in _PyObject_GC_New build/Python-2.7.6/Modules/gcmodule.c:1521 #3 0x57e581 in PyDict_New build/Python-2.7.6/Objects/dictobject.c:277 #4 0x62b9a7 in _PyWarnings_Init build/Python-2.7.6/Python/_warnings.c:898 #5 0x4c2985 in Py_InitializeEx build/Python-2.7.6/Python/pythonrun.c:254 #6 0x4c22a4 in f() build/Python-2.7.6/1.cc:4 #7 0x4c22a4 in main build/Python-2.7.6/1.cc:14 * datetime module creates a bunch of objects in its initialization function and never destroys them Direct leak of 8120 byte(s) in 29 object(s) allocated from: #0 0x4a3e38 in malloc /code/llvm/build0/../projects/compiler-rt/lib/asan/asan_malloc_linux.cc:75 #1 0x4e1524 in _PyObject_GC_Malloc build/Python-2.7.6/Modules/gcmodule.c:1499 #2 0x4e16ff in _PyObject_GC_New build/Python-2.7.6/Modules/gcmodule.c:1521 #3 0x57e581 in PyDict_New build/Python-2.7.6/Objects/dictobject.c:277 #4 0x6cb976 in PyErr_NewException build/Python-2.7.6/Python/errors.c:577 #5 0x757227 in initzipimport build/Python-2.7.6/./Modules/zipimport.c:1235 #6 0x6e5797 in init_builtin build/Python-2.7.6/Python/import.c:1999 #7 0x6e158d in load_module build/Python-2.7.6/Python/import.c:1928 #8 0x6e6919 in import_submodule build/Python-2.7.6/Python/import.c:2700 #9 0x6e5ac7 in load_next build/Python-2.7.6/Python/import.c:2515 #10 0x6e036c in import_module_level build/Python-2.7.6/Python/import.c:2224 #11 0x6e036c in PyImport_ImportModuleLevel build/Python-2.7.6/Python/import.c:2288 #12 0x671e6f in builtin___import__ build/Python-2.7.6/Python/bltinmodule.c:49 #13 0x502b40 in PyObject_Call build/Python-2.7.6/Objects/abstract.c:2529 #14 0x502e82 in call_function_tail build/Python-2.7.6/Objects/abstract.c:2561 #15 0x502e82 in PyObject_CallFunction build/Python-2.7.6/Objects/abstract.c:2585 #16 0x6df7b0 in PyImport_Import build/Python-2.7.6/Python/import.c:2886 #17 0x6db9a7 in PyImport_ImportModule build/Python-2.7.6/Python/import.c:2129 #18 0x6db9a7 in _PyImportHooks_Init build/Python-2.7.6/Python/import.c:239 #19 0x4c287f in Py_InitializeEx build/Python-2.7.6/Python/pythonrun.c:248 #20 0x4c22a4 in f() build/Python-2.7.6/1.cc:4 #21 0x4c22a4 in main build/Python-2.7.6/1.cc:14 ---------- components: Extension Modules, Interpreter Core messages: 217513 nosy: Evgeniy.Stepanov priority: normal severity: normal status: open title: Memory leaks when embedded interpreter is reinitialized versions: Python 2.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue21387> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com