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Add "/dev/tty" as a special file name for lit tests.
If a lit test has a RUN line that includes a redirection to "/dev/tty", the redirection goes to the special device file corresponding to the console. It is /dev/tty on UNIX-like systems and "CON" on Windows. This patch is needed to implement a test like PR25717 (caused by the size limit of the Windows system call WriteConsole() prior to Windows 8) where the test only breaks when outputing to the console and won't fail if using a pipe. llvm-svn: 258898
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@ -245,6 +245,10 @@ def _executeShCmd(cmd, shenv, results, timeoutHelper):
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if r[2] is None:
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if kAvoidDevNull and r[0] == '/dev/null':
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r[2] = tempfile.TemporaryFile(mode=r[1])
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elif kIsWindows and r[0] == '/dev/tty':
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# Simulate /dev/tty on Windows.
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# "CON" is a special filename for the console.
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r[2] = open("CON", r[1])
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else:
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# Make sure relative paths are relative to the cwd.
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redir_filename = os.path.join(cmd_shenv.cwd, r[0])
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