[3.7] bpo-23420: Verify the value of '-s' when execute the CLI of cProfile (GH-9925) (GH-9926)



[3.7] [bpo-23420](https://bugs.python.org/issue23420): Verify the value of '-s' when execute the CLI of cProfile (GH-9925)

Verify the value for the parameter '-s' of the cProfile CLI. Patch by Robert
Kuska.

Co-authored-by: Robert Kuska <rkuska@gmail.com>
(cherry picked from commit fcd5e84a515e19409840c570730f0728e9fcfc83)





https://bugs.python.org/issue23420
diff --git a/Lib/cProfile.py b/Lib/cProfile.py
index c044be8..f6e423b 100755
--- a/Lib/cProfile.py
+++ b/Lib/cProfile.py
@@ -124,6 +124,7 @@
     import os
     import sys
     import runpy
+    import pstats
     from optparse import OptionParser
     usage = "cProfile.py [-o output_file_path] [-s sort] [-m module | scriptfile] [arg] ..."
     parser = OptionParser(usage=usage)
@@ -132,7 +133,8 @@
         help="Save stats to <outfile>", default=None)
     parser.add_option('-s', '--sort', dest="sort",
         help="Sort order when printing to stdout, based on pstats.Stats class",
-        default=-1)
+        default=-1,
+        choices=sorted(pstats.Stats.sort_arg_dict_default))
     parser.add_option('-m', dest="module", action="store_true",
         help="Profile a library module", default=False)