Python/ceval.c

Author: iritkatriel

Python/bytecodes.c

@@ -17,7 +17,7 @@
 #include "pycore_object.h"        // _PyObject_GC_TRACK()
 #include "pycore_moduleobject.h"  // PyModuleObject
 #include "pycore_opcode.h"        // EXTRA_CASES
-#include "pycore_pyerrors.h"      // _PyErr_Fetch()
+#include "pycore_pyerrors.h"      // _PyErr_GetRaisedException()
 #include "pycore_pymem.h"         // _PyMem_IsPtrFreed()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_range.h"         // _PyRangeIterObject

Python/ceval.c

@@ -13,7 +13,7 @@
 #include "pycore_object.h"        // _PyObject_GC_TRACK()
 #include "pycore_moduleobject.h"  // PyModuleObject
 #include "pycore_opcode.h"        // EXTRA_CASES
-#include "pycore_pyerrors.h"      // _PyErr_Fetch()
+#include "pycore_pyerrors.h"      // _PyErr_Fetch(), _PyErr_GetRaisedException()
 #include "pycore_pymem.h"         // _PyMem_IsPtrFreed()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_range.h"         // _PyRangeIterObject
@@ -105,8 +105,7 @@ static void
 dump_stack(_PyInterpreterFrame *frame, PyObject **stack_pointer)
 {
     PyObject **stack_base = _PyFrame_Stackbase(frame);
-    PyObject *type, *value, *traceback;
-    PyErr_Fetch(&type, &value, &traceback);
+    PyObject *exc = PyErr_GetRaisedException();
     printf("    stack=[");
     for (PyObject **ptr = stack_base; ptr < stack_pointer; ptr++) {
         if (ptr != stack_base) {
@@ -120,7 +119,7 @@ dump_stack(_PyInterpreterFrame *frame, PyObject **stack_pointer)
     }
     printf("]\n");
     fflush(stdout);
-    PyErr_Restore(type, value, traceback);
+    PyErr_SetRaisedException(exc);
 }
 
 static void
@@ -157,8 +156,7 @@ lltrace_resume_frame(_PyInterpreterFrame *frame)
         return;
     }
     PyFunctionObject *f = (PyFunctionObject *)fobj;
-    PyObject *type, *value, *traceback;
-    PyErr_Fetch(&type, &value, &traceback);
+    PyObject *exc = PyErr_GetRaisedException();
     PyObject *name = f->func_qualname;
     if (name == NULL) {
         name = f->func_name;
@@ -178,7 +176,7 @@ lltrace_resume_frame(_PyInterpreterFrame *frame)
     }
     printf("\n");
     fflush(stdout);
-    PyErr_Restore(type, value, traceback);
+    PyErr_SetRaisedException(exc);
 }
 #endif
 static int call_trace(Py_tracefunc, PyObject *,
@@ -1032,7 +1030,6 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
                 PyObject *v = POP();
                 Py_XDECREF(v);
             }
-            PyObject *exc, *val, *tb;
             if (lasti) {
                 int frame_lasti = _PyInterpreterFrame_LASTI(frame);
                 PyObject *lasti = PyLong_FromLong(frame_lasti);
@@ -1041,19 +1038,12 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
                 }
                 PUSH(lasti);
             }
-            _PyErr_Fetch(tstate, &exc, &val, &tb);
+
             /* Make the raw exception data
                 available to the handler,
                 so a program can emulate the
                 Python main loop. */
-            _PyErr_NormalizeException(tstate, &exc, &val, &tb);
-            if (tb != NULL)
-                PyException_SetTraceback(val, tb);
-            else
-                PyException_SetTraceback(val, Py_None);
-            Py_XDECREF(tb);
-            Py_XDECREF(exc);
-            PUSH(val);
+            PUSH(_PyErr_GetRaisedException(tstate));
             JUMPTO(handler);
             /* Resume normal execution */
             DISPATCH();
@@ -2075,19 +2065,15 @@ call_trace_protected(Py_tracefunc func, PyObject *obj,
                      PyThreadState *tstate, _PyInterpreterFrame *frame,
                      int what, PyObject *arg)
 {
-    PyObject *type, *value, *traceback;
-    int err;
-    _PyErr_Fetch(tstate, &type, &value, &traceback);
-    err = call_trace(func, obj, tstate, frame, what, arg);
+    PyObject *exc = _PyErr_GetRaisedException(tstate);
+    int err = call_trace(func, obj, tstate, frame, what, arg);
     if (err == 0)
     {
-        _PyErr_Restore(tstate, type, value, traceback);
+        _PyErr_SetRaisedException(tstate, exc);
         return 0;
     }
     else {
-        Py_XDECREF(type);
-        Py_XDECREF(value);
-        Py_XDECREF(traceback);
+        Py_XDECREF(exc);
         return -1;
     }
 }
@@ -2935,18 +2921,15 @@ format_exc_check_arg(PyThreadState *tstate, PyObject *exc,
 
     if (exc == PyExc_NameError) {
         // Include the name in the NameError exceptions to offer suggestions later.
-        PyObject *type, *value, *traceback;
-        PyErr_Fetch(&type, &value, &traceback);
-        PyErr_NormalizeException(&type, &value, &traceback);
-        if (PyErr_GivenExceptionMatches(value, PyExc_NameError)) {
-            PyNameErrorObject* exc = (PyNameErrorObject*) value;
-            if (exc->name == NULL) {
+        PyObject *exc = PyErr_GetRaisedException();
+        if (PyErr_GivenExceptionMatches(exc, PyExc_NameError)) {
+            if (((PyNameErrorObject*)exc)->name == NULL) {
                 // We do not care if this fails because we are going to restore the
                 // NameError anyway.
-                (void)PyObject_SetAttr(value, &_Py_ID(name), obj);
+                (void)PyObject_SetAttr(exc, &_Py_ID(name), obj);
             }
         }
-        PyErr_Restore(type, value, traceback);
+        PyErr_SetRaisedException(exc);
     }
 }