c/s 18596903 "xen/tools: support Python 2 and Python 3" unfortunately
introduced a TypeError when changing how Fail exceptions were printed:

  /local/xen.git/xen/../xen/tools/gen-cpuid.py:Traceback (most recent call 
last):
    File "/local/xen.git/xen/../xen/tools/gen-cpuid.py", line 483, in <module>
        sys.stderr.write(e)
  TypeError: expected a character buffer object

Coerce e to a string before printing.  While changing this, fold the three
write() calls making up the line into a single one, and take the opportunity
to neaten the output.

A sample error is:

  /local/xen.git/xen/tools/gen-cpuid.py: Fail: Aliased value between FOO and BAR

Signed-off-by: Andrew Cooper <[email protected]>
---
CC: Jan Beulich <[email protected]>
CC: Wei Liu <[email protected]>
CC: Roger Pau MonnĂ© <[email protected]>
---
 xen/tools/gen-cpuid.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/xen/tools/gen-cpuid.py b/xen/tools/gen-cpuid.py
index 31fdee9..27569bd 100755
--- a/xen/tools/gen-cpuid.py
+++ b/xen/tools/gen-cpuid.py
@@ -479,9 +479,8 @@ if __name__ == "__main__":
         sys.exit(main())
     except Fail:
         e = sys.exc_info()[1]
-        sys.stderr.write("%s:" % (sys.argv[0],))
-        sys.stderr.write(e)
-        sys.stderr.write("\n")
+        sys.stderr.write("%s: Fail: %s\n" %
+                         (os.path.abspath(sys.argv[0]), str(e)))
         sys.exit(1)
     except SystemExit:
         e = sys.exc_info()[1]
-- 
2.1.4


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