https://bugs.gentoo.org/983043
https://github.com/efficios/babeltrace/commit/1c59884d4ddf384b87df95d317b62f5f5783ca27

From 1c59884d4ddf384b87df95d317b62f5f5783ca27 Mon Sep 17 00:00:00 2001
From: Jitka Plesnikova <jplesnik@redhat.com>
Date: Tue, 28 Jul 2026 13:29:18 +0000
Subject: [PATCH] bt2: replace removed Python 2 C API macros for SWIG 4.5.0
 compatibility

SWIG 4.5.0 has removed some Python 2/3 compatibility macros.  The two
that affect us are `PyString_FromString` and
`SWIG_Python_str_FromChar`, which are both replaced with
`PyUnicode_FromString`.

Change-Id: I3c74d8ea7257d9cdc0fa4b533ae7b3a5ef9521d1
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Signed-off-by: Jitka Plesnikova <jplesnik@redhat.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/18423
Tested-by: jenkins <jenkins@lttng.org>
--- a/src/bindings/python/bt2/bt2/native_bt.i
+++ b/src/bindings/python/bt2/bt2/native_bt.i
@@ -56,7 +56,7 @@ typedef uint64_t bt_listener_id;
  *
  * We initialize the output parameter `temp_value` to an invalid but non-zero
  * pointer value.  This is to make sure we don't rely on its initial value in
- * the epilogue (where we call SWIG_Python_str_FromChar).  When they fail,
+ * the epilogue (where we call PyUnicode_FromString).  When they fail,
  * functions on which we apply this typemap don't guarantee that the value of
  * `temp_value` will be unchanged or valid.
  */
@@ -67,7 +67,7 @@ typedef uint64_t bt_listener_id;
 %typemap(argout) (const char **) {
 	if (*$1) {
 		/* SWIG_AppendOutput() steals the created object */
-		$result = SWIG_AppendOutput($result, SWIG_Python_str_FromChar(*$1));
+		$result = SWIG_AppendOutput($result, PyUnicode_FromString(*$1));
 	} else {
 		/* SWIG_AppendOutput() steals Py_None */
 		Py_INCREF(Py_None);
--- a/src/bindings/python/bt2/bt2/native_bt_error.i.hpp
+++ b/src/bindings/python/bt2/bt2/native_bt_error.i.hpp
@@ -19,7 +19,7 @@ static PyObject *bt_bt2_format_bt_error_cause(const bt_error_cause *error_cause)
                               BT_COMMON_COLOR_WHEN_NEVER);
     BT_ASSERT(error_cause_str);
 
-    py_error_cause_str = PyString_FromString(error_cause_str);
+    py_error_cause_str = PyUnicode_FromString(error_cause_str);
 
     g_free(error_cause_str);
 
@@ -35,7 +35,7 @@ static PyObject *bt_bt2_format_bt_error(const bt_error *error)
                                 BT_COMMON_COLOR_WHEN_NEVER);
     BT_ASSERT(error_str);
 
-    py_error_str = PyString_FromString(error_str);
+    py_error_str = PyUnicode_FromString(error_str);
 
     g_free(error_str);