diff options
Diffstat (limited to 'Objects/object.c')
| -rw-r--r-- | Objects/object.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Objects/object.c b/Objects/object.c index 8256071..2252f98 100644 --- a/Objects/object.c +++ b/Objects/object.c @@ -10,6 +10,9 @@ extern "C" { #endif +/* Defined in tracemalloc.c */ +extern void _PyMem_DumpTraceback(int fd, const void *ptr); + _Py_IDENTIFIER(Py_Repr); _Py_IDENTIFIER(__bytes__); _Py_IDENTIFIER(__dir__); @@ -2212,6 +2215,55 @@ _PyTrash_thread_destroy_chain(void) --tstate->trash_delete_nesting; } + +void +_PyObject_AssertFailed(PyObject *obj, const char *msg, const char *expr, + const char *file, int line, const char *function) +{ + fprintf(stderr, + "%s:%d: %s: Assertion \"%s\" failed", + file, line, function, expr); + fflush(stderr); + + if (msg) { + fprintf(stderr, "; %s.\n", msg); + } + else { + fprintf(stderr, ".\n"); + } + fflush(stderr); + + if (obj == NULL) { + fprintf(stderr, "<NULL object>\n"); + } + else if (_PyObject_IsFreed(obj)) { + /* It seems like the object memory has been freed: + don't access it to prevent a segmentation fault. */ + fprintf(stderr, "<Freed object>\n"); + } + else { + /* Diplay the traceback where the object has been allocated. + Do it before dumping repr(obj), since repr() is more likely + to crash than dumping the traceback. */ + void *ptr; + PyTypeObject *type = Py_TYPE(obj); + if (PyType_IS_GC(type)) { + ptr = (void *)((char *)obj - sizeof(PyGC_Head)); + } + else { + ptr = (void *)obj; + } + _PyMem_DumpTraceback(fileno(stderr), ptr); + + /* This might succeed or fail, but we're about to abort, so at least + try to provide any extra info we can: */ + _PyObject_Dump(obj); + } + fflush(stderr); + + Py_FatalError("_PyObject_AssertFailed"); +} + #ifndef Py_TRACE_REFS /* For Py_LIMITED_API, we need an out-of-line version of _Py_Dealloc. Define this here, so we can undefine the macro. */ |