From 1479dd9c75917d2be70ee840c9db141e59987e44 Mon Sep 17 00:00:00 2001
From: Alexander Kanavin <alex@linutronix.de>
Date: Wed, 14 Sep 2022 14:03:10 +0200
Subject: [PATCH] mozjs-91: backport a python 3.11 compatibility patch

# HG changeset patch
# User ahochheiden <ahochheiden@mozilla.com>
# Date 1654151264 0
# Node ID f54162b2c1f2fe52c6137ab2c3469a1944f58b27
# Parent  6e7776492240c27732840d65a33dcc440fa1aba0
Bug 1769631 - Remove 'U' from 'mode' parameters for various 'open' calls to ensure Python3.11 compatibility r=firefox-build-system-reviewers,glandium

The 'U' flag represents "universal newline". It has been deprecated
since Python3.3. Since then "universal newline" is the default when a
file is opened in text mode (not bytes). In Python3.11 using the 'U'
flag throws errors. There should be no harm in removing 'U' from 'open'
everywhere it is used, and doing allows the use of Python3.11.

For more reading see: https://docs.python.org/3.11/whatsnew/3.11.html#changes-in-the-python-api

Differential Revision: https://phabricator.services.mozilla.com/D147721

Upstream-Status: Backport [https://hg.mozilla.org/mozilla-central/rev/f54162b2c1f2fe52c6137ab2c3469a1944f58b27]
Signed-off-by: Alexander Kanavin <alex@linutronix.de>

---
 dom/base/usecounters.py                                 | 2 +-
 python/mozbuild/mozbuild/action/process_define_files.py | 2 +-
 python/mozbuild/mozbuild/backend/base.py                | 2 +-
 python/mozbuild/mozbuild/preprocessor.py                | 6 +++---
 python/mozbuild/mozbuild/util.py                        | 2 +-
 python/mozbuild/mozpack/files.py                        | 4 ++--
 6 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/dom/base/usecounters.py b/dom/base/usecounters.py
index 780e3b32b2..7e2c7148ec 100644
--- a/dom/base/usecounters.py
+++ b/dom/base/usecounters.py
@@ -8,7 +8,7 @@ import re
 
 def read_conf(conf_filename):
     # Can't read/write from a single StringIO, so make a new one for reading.
-    stream = open(conf_filename, "rU")
+    stream = open(conf_filename, "r")
 
     def parse_counters(stream):
         for line_num, line in enumerate(stream):
diff --git a/python/mozbuild/mozbuild/action/process_define_files.py b/python/mozbuild/mozbuild/action/process_define_files.py
index f1d401ac26..aca59d0f05 100644
--- a/python/mozbuild/mozbuild/action/process_define_files.py
+++ b/python/mozbuild/mozbuild/action/process_define_files.py
@@ -36,7 +36,7 @@ def process_define_file(output, input):
     ) and not config.substs.get("JS_STANDALONE"):
         config = PartialConfigEnvironment(mozpath.join(topobjdir, "js", "src"))
 
-    with open(path, "rU") as input:
+    with open(path, "r") as input:
         r = re.compile(
             "^\s*#\s*(?P<cmd>[a-z]+)(?:\s+(?P<name>\S+)(?:\s+(?P<value>\S+))?)?", re.U
         )
diff --git a/python/mozbuild/mozbuild/backend/base.py b/python/mozbuild/mozbuild/backend/base.py
index 7bc1986d86..b64a709468 100644
--- a/python/mozbuild/mozbuild/backend/base.py
+++ b/python/mozbuild/mozbuild/backend/base.py
@@ -272,7 +272,7 @@ class BuildBackend(LoggingMixin):
         return status
 
     @contextmanager
-    def _write_file(self, path=None, fh=None, readmode="rU"):
+    def _write_file(self, path=None, fh=None, readmode="r"):
         """Context manager to write a file.
 
         This is a glorified wrapper around FileAvoidWrite with integration to
diff --git a/python/mozbuild/mozbuild/preprocessor.py b/python/mozbuild/mozbuild/preprocessor.py
index f7820b9c91..857f1a6c9b 100644
--- a/python/mozbuild/mozbuild/preprocessor.py
+++ b/python/mozbuild/mozbuild/preprocessor.py
@@ -531,7 +531,7 @@ class Preprocessor:
 
         if args:
             for f in args:
-                with io.open(f, "rU", encoding="utf-8") as input:
+                with io.open(f, "r", encoding="utf-8") as input:
                     self.processFile(input=input, output=out)
             if depfile:
                 mk = Makefile()
@@ -860,7 +860,7 @@ class Preprocessor:
                     args = self.applyFilters(args)
                 if not os.path.isabs(args):
                     args = os.path.join(self.curdir, args)
-                args = io.open(args, "rU", encoding="utf-8")
+                args = io.open(args, "r", encoding="utf-8")
             except Preprocessor.Error:
                 raise
             except Exception:
@@ -914,7 +914,7 @@ class Preprocessor:
 def preprocess(includes=[sys.stdin], defines={}, output=sys.stdout, marker="#"):
     pp = Preprocessor(defines=defines, marker=marker)
     for f in includes:
-        with io.open(f, "rU", encoding="utf-8") as input:
+        with io.open(f, "r", encoding="utf-8") as input:
             pp.processFile(input=input, output=output)
     return pp.includes
 
diff --git a/python/mozbuild/mozbuild/util.py b/python/mozbuild/mozbuild/util.py
index b09f164698..4f1e0cdc5f 100644
--- a/python/mozbuild/mozbuild/util.py
+++ b/python/mozbuild/mozbuild/util.py
@@ -236,7 +236,7 @@ class FileAvoidWrite(BytesIO):
     still occur, as well as diff capture if requested.
     """
 
-    def __init__(self, filename, capture_diff=False, dry_run=False, readmode="rU"):
+    def __init__(self, filename, capture_diff=False, dry_run=False, readmode="r"):
         BytesIO.__init__(self)
         self.name = filename
         assert type(capture_diff) == bool
diff --git a/python/mozbuild/mozpack/files.py b/python/mozbuild/mozpack/files.py
index 1d8a1ed2d8..a295a67b5a 100644
--- a/python/mozbuild/mozpack/files.py
+++ b/python/mozbuild/mozpack/files.py
@@ -554,7 +554,7 @@ class PreprocessedFile(BaseFile):
         pp = Preprocessor(defines=self.defines, marker=self.marker)
         pp.setSilenceDirectiveWarnings(self.silence_missing_directive_warnings)
 
-        with _open(self.path, "rU") as input:
+        with _open(self.path, "r") as input:
             with _open(os.devnull, "w") as output:
                 pp.processFile(input=input, output=output)
 
@@ -611,7 +611,7 @@ class PreprocessedFile(BaseFile):
         pp = Preprocessor(defines=self.defines, marker=self.marker)
         pp.setSilenceDirectiveWarnings(self.silence_missing_directive_warnings)
 
-        with _open(self.path, "rU") as input:
+        with _open(self.path, "r") as input:
             pp.processFile(input=input, output=dest, depfile=deps_out)
 
         dest.close()