bpo-44472: Fix ltrace functionality when exceptions are raised (GH-26822) (GH-26830)

(cherry picked from commit 06cda808f149fae9b4c688f752b6eccd0d455ba4)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

diff --git a/Misc/NEWS.d/next/Core and Builtins/2021-06-21-11-19-54.bpo-44472.Vvm1yn.rst b/Misc/NEWS.d/next/Core and Builtins/2021-06-21-11-19-54.bpo-44472.Vvm1yn.rst
new file mode 100644 (file)
index 0000000..34fa2a9
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2021-06-21-11-19-54.bpo-44472.Vvm1yn.rst
@@ -0,0 +1 @@
+Fix ltrace functionality when exceptions are raised. Patch by Pablo Galindo

diff --git a/Python/ceval.c b/Python/ceval.c
index 2674e46b3d60654428353877c5e63689717c15cc..6482c8892d43f18fc494494587dfddc7a537b353 100644 (file)
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -5385,11 +5385,14 @@ static int
 prtrace(PyThreadState *tstate, PyObject *v, const char *str)
 {
     printf("%s ", str);
+    PyObject *type, *value, *traceback;
+    PyErr_Fetch(&type, &value, &traceback);
     if (PyObject_Print(v, stdout, 0) != 0) {
         /* Don't know what else to do */
         _PyErr_Clear(tstate);
     }
     printf("\n");
+    PyErr_Restore(type, value, traceback);
     return 1;
 }
 #endif