# HG changeset patch
# Parent  ebec1a98ab81d19245e4bde2da03ccb489b9eb5f
Issue #14771: Redirect GDB's stdin to avoid messing the terminal settings

Otherwise, GDB seems to affect the terminal's foreground process group,
interfering with test_ioctl, which does not expect the foreground process to
change during the test. This change also solves the problem of the tests
being stopped in the shell if test_gdb is run twice in parallel.

diff -r ebec1a98ab81 Lib/test/test_gdb.py
--- a/Lib/test/test_gdb.py	Mon Nov 23 16:44:30 2015 +0200
+++ b/Lib/test/test_gdb.py	Mon Dec 07 05:03:51 2015 +0000
@@ -75,6 +75,9 @@
     if (gdb_major_version, gdb_minor_version) >= (7, 4):
         base_cmd += ('-iex', 'add-auto-load-safe-path ' + checkout_hook_path)
     proc = subprocess.Popen(base_cmd + args,
+                            # Redirect stdin to prevent GDB from messing with
+                            # the terminal settings
+                            stdin=subprocess.PIPE,
                             stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE,
                             env=env)