userspace: eliminate warning in process_gperf.py
Python 3.7 throws a FutureWarning when it thinks it
has found a nested set in a regular expression.
We weren't actually; just trying to match some brackets.
Escape them instead. No functional difference.
Fixes: #11961
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
diff --git a/scripts/process_gperf.py b/scripts/process_gperf.py
index 7578888..2e55060 100755
--- a/scripts/process_gperf.py
+++ b/scripts/process_gperf.py
@@ -101,7 +101,7 @@
# Replace length lookups with constant len of 4 since we're always
# looking at pointers
- line = re.sub(r'lengthtable[[]key[]]', r'4', line)
+ line = re.sub(r'lengthtable\[key\]', r'4', line)
# Empty wordlist entries to have NULLs instead of ""
line = re.sub(r'[{]["]["][}]', r'{}', line)
