Merged revisions 68763,68773 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r68763 | kristjan.jonsson | 2009-01-19 07:10:27 -0600 (Mon, 19 Jan 2009) | 2 lines

  Issue 4957
  Let os.ftruncate raise OSError like documented.
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  r68773 | benjamin.peterson | 2009-01-19 09:51:27 -0600 (Mon, 19 Jan 2009) | 1 line

  simplify code
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diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 4909993..69b6978 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -5114,10 +5114,8 @@
 	Py_BEGIN_ALLOW_THREADS
 	res = ftruncate(fd, length);
 	Py_END_ALLOW_THREADS
-	if (res < 0) {
-		PyErr_SetFromErrno(PyExc_IOError);
-		return NULL;
-	}
+	if (res < 0)
+		return posix_error();
 	Py_INCREF(Py_None);
 	return Py_None;
 }