[PATCH] tracetool: avoid invalid escape in Python string

[Paolo Bonzini <pbonzini@redhat.com>]

This is an error in Python 3.12; fix it by using a raw string literal.

Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 scripts/tracetool/__init__.py        | 14 +++++++-------
 scripts/tracetool/format/log_stap.py |  2 +-
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/scripts/tracetool/__init__.py b/scripts/tracetool/__init__.py
index 33cf85e2b04..b29594d75e0 100644
--- a/scripts/tracetool/__init__.py
+++ b/scripts/tracetool/__init__.py
@@ -210,12 +210,12 @@ class Event(object):
 
     """
 
-    _CRE = re.compile("((?P<props>[\w\s]+)\s+)?"
-                      "(?P<name>\w+)"
-                      "\((?P<args>[^)]*)\)"
-                      "\s*"
-                      "(?:(?:(?P<fmt_trans>\".+),)?\s*(?P<fmt>\".+))?"
-                      "\s*")
+    _CRE = re.compile(r"((?P<props>[\w\s]+)\s+)?"
+                      r"(?P<name>\w+)"
+                      r"\((?P<args>[^)]*)\)"
+                      r"\s*"
+                      r"(?:(?:(?P<fmt_trans>\".+),)?\s*(?P<fmt>\".+))?"
+                      r"\s*")
 
     _VALID_PROPS = set(["disable", "vcpu"])
 
@@ -326,7 +326,7 @@ def __repr__(self):
                                           fmt)
     # Star matching on PRI is dangerous as one might have multiple
     # arguments with that format, hence the non-greedy version of it.
-    _FMT = re.compile("(%[\d\.]*\w+|%.*?PRI\S+)")
+    _FMT = re.compile(r"(%[\d\.]*\w+|%.*?PRI\S+)")
 
     def formats(self):
         """List conversion specifiers in the argument print format string."""
diff --git a/scripts/tracetool/format/log_stap.py b/scripts/tracetool/format/log_stap.py
index 0b6549d534a..b49afababd6 100644
--- a/scripts/tracetool/format/log_stap.py
+++ b/scripts/tracetool/format/log_stap.py
@@ -83,7 +83,7 @@ def c_fmt_to_stap(fmt):
     # and "%ll" is not valid at all. Similarly the size_t
     # based "%z" size qualifier is not valid. We just
     # strip all size qualifiers for sanity.
-    fmt = re.sub("%(\d*)(l+|z)(x|u|d)", "%\\1\\3", "".join(bits))
+    fmt = re.sub(r"%(\d*)(l+|z)(x|u|d)", r"%\1\3", "".join(bits))
     return fmt
 
 def generate(events, backend, group):
-- 
2.41.0