commit 97f8225d22ef727ae9935cc231643efdc430d530
Author: Zack Weinberg <zackw@panix.com>
Date:   Thu Mar 14 09:44:22 2019 -0400

    scripts/check-obsolete-constructs.py: Process all headers as UTF-8.
    
    A few of our installed headers contain UTF-8 in comments.
    check-obsolete-constructs opened files without explicitly specifying
    their encoding, so it would barf on these headers if “make check” was
    run in a non-UTF-8 locale.
    
            * scripts/check-obsolete-constructs.py (HeaderChecker.check):
            Specify encoding="utf-8" when opening headers to check.

diff --git a/scripts/check-obsolete-constructs.py b/scripts/check-obsolete-constructs.py
index ce5c72251f4d7cc0..89d21dea6e788783 100755
--- a/scripts/check-obsolete-constructs.py
+++ b/scripts/check-obsolete-constructs.py
@@ -437,7 +437,7 @@ class HeaderChecker:
     def check(self, fname):
         self.fname = fname
         try:
-            with open(fname, "rt") as fp:
+            with open(fname, "rt", encoding="utf-8") as fp:
                 contents = fp.read()
         except OSError as e:
             sys.stderr.write("{}: {}\n".format(fname, e.strerror))