From 6fb4248cd9502f50dd089fdcf548d735dcfd981e Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Mon, 12 Jul 2021 08:11:10 -0700
Subject: [PATCH] bpo-44472: Fix ltrace functionality when exceptions are
 raised (GH-26822) (#26831)

(cherry picked from commit 06cda808f149fae9b4c688f752b6eccd0d455ba4)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
---
 .../Core and Builtins/2021-06-21-11-19-54.bpo-44472.Vvm1yn.rst | 1 +
 Python/ceval.c                                                 | 3 +++
 2 files changed, 4 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Core and Builtins/2021-06-21-11-19-54.bpo-44472.Vvm1yn.rst

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
index 00000000000..34fa2a9e861
--- /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 91e879e8042..86a5d81b766 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -4598,11 +4598,14 @@ 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