# HG changeset patch
# User Gregory Szorc <gregory.szorc@gmail.com>
# Date 2018-01-14 20:06:27
# Node ID de598e84c24421a6451db9dca73f506f103a593a
# Parent  2c6ebd0c850eb4c79a50b70431d200deccccd824

py3: cast error message to localstr in blackbox.py

According to the exceptions reporting mechanism, this is the #1 crasher
in the test harness for Python 3.

Since this exception is in an except block, we'll likely get a
new #1 crasher after this change. But at least we won't die
during error handling!

Differential Revision: https://phab.mercurial-scm.org/D1478

diff --git a/hgext/blackbox.py b/hgext/blackbox.py
--- a/hgext/blackbox.py
+++ b/hgext/blackbox.py
@@ -44,6 +44,7 @@ from mercurial.i18n import _
 from mercurial.node import hex
 
 from mercurial import (
+    encoding,
     registrar,
     ui as uimod,
     util,
@@ -182,7 +183,7 @@ def wrapui(ui):
                     fp.write(fmt % args)
             except (IOError, OSError) as err:
                 self.debug('warning: cannot write to blackbox.log: %s\n' %
-                           err.strerror)
+                           encoding.strtolocal(err.strerror))
                 # do not restore _bbinlog intentionally to avoid failed
                 # logging again
             else: