bpo-42005: Fix CLI of cProfile and profile to catch BrokenPipeError

Lib/cProfile.py

@@ -175,7 +175,12 @@ def main():
                 '__package__': None,
                 '__cached__': None,
             }
+        try:
             runctx(code, globs, None, options.outfile, options.sort)
+        except BrokenPipeError as exc:
+            # Prevent "Exception ignored" during interpreter shutdown.
+            sys.stdout = None
+            sys.exit(exc.errno)
     else:
         parser.print_usage()
     return parser

Lib/profile.py

@@ -595,7 +595,12 @@ def main():
                 '__package__': None,
                 '__cached__': None,
             }
+        try:
             runctx(code, globs, None, options.outfile, options.sort)
+        except BrokenPipeError as exc:
+            # Prevent "Exception ignored" during interpreter shutdown.
+            sys.stdout = None
+            sys.exit(exc.errno)
     else:
         parser.print_usage()
     return parser

Misc/NEWS.d/next/Library/2020-10-11-13-48-03.bpo-42005.Jq6Az-.rst

@@ -0,0 +1,2 @@
+Fix CLI of :mod:`cProfile` and :mod:`profile` to catch
+:exc:`BrokenPipeError`.