[llvm] r362846 - Fix string literals to avoid deprecation warnings in regexp patterns

[Adrian McCarthy via llvm-commits]

Author: amccarth
Date: Fri Jun  7 14:14:33 2019
New Revision: 362846

URL: http://llvm.org/viewvc/llvm-project?rev=362846&view=rev
Log:
Fix string literals to avoid deprecation warnings in regexp patterns

In LLDB, where tests run with the debug version of Python, we get a
series of deprecation warnings because escape sequences like `\(` are
being treated as part of the string literal rather than an escape for
the regexp pattern.

NFC intended.

Differential Revision: https://reviews.llvm.org/D62882

Modified:
    llvm/trunk/utils/lit/lit/TestRunner.py

Modified: llvm/trunk/utils/lit/lit/TestRunner.py
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/lit/lit/TestRunner.py?rev=362846&r1=362845&r2=362846&view=diff
==============================================================================
--- llvm/trunk/utils/lit/lit/TestRunner.py (original)
+++ llvm/trunk/utils/lit/lit/TestRunner.py Fri Jun  7 14:14:33 2019
@@ -49,7 +49,7 @@ kDevNull = "/dev/null"
 # This regex captures ARG.  ARG must not contain a right parenthesis, which
 # terminates %dbg.  ARG must not contain quotes, in which ARG might be enclosed
 # during expansion.
-kPdbgRegex = '%dbg\(([^)\'"]*)\)'
+kPdbgRegex = '%dbg\\(([^)\'"]*)\\)'
 
 class ShellEnvironment(object):
 
@@ -1420,14 +1420,14 @@ class IntegratedTestKeywordParser(object
         # Trim trailing whitespace.
         line = line.rstrip()
         # Substitute line number expressions
-        line = re.sub('%\(line\)', str(line_number), line)
+        line = re.sub(r'%\(line\)', str(line_number), line)
 
         def replace_line_number(match):
             if match.group(1) == '+':
                 return str(line_number + int(match.group(2)))
             if match.group(1) == '-':
                 return str(line_number - int(match.group(2)))
-        line = re.sub('%\(line *([\+-]) *(\d+)\)', replace_line_number, line)
+        line = re.sub(r'%\(line *([\+-]) *(\d+)\)', replace_line_number, line)
         # Collapse lines with trailing '\\'.
         if output and output[-1][-1] == '\\':
             output[-1] = output[-1][:-1] + line