[xen master] xen/misra: xen-analysis.py: Improve the cppcheck version check

[patchbot@xxxxxxx]

commit 56c0063f4e7a71ba8bb91207d7f111e971dcec02
Author:     Luca Fancellu <luca.fancellu@xxxxxxx>
AuthorDate: Thu May 25 14:56:55 2023 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu May 25 14:56:55 2023 +0200

    xen/misra: xen-analysis.py: Improve the cppcheck version check
    
    Use tuple comparison to check the cppcheck version.
    
    Take the occasion to harden the regex, escaping the dots so that we
    check for them instead of generic characters.
    
    Suggested-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/scripts/xen_analysis/cppcheck_analysis.py | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/xen/scripts/xen_analysis/cppcheck_analysis.py 
b/xen/scripts/xen_analysis/cppcheck_analysis.py
index c8abbe0fca..8dc45e653b 100644
--- a/xen/scripts/xen_analysis/cppcheck_analysis.py
+++ b/xen/scripts/xen_analysis/cppcheck_analysis.py
@@ -157,7 +157,7 @@ def generate_cppcheck_deps():
             "Error occured retrieving cppcheck version:\n{}\n\n{}"
         )
 
-    version_regex = re.search('^Cppcheck (\d+).(\d+)(?:.\d+)?$',
+    version_regex = re.search('^Cppcheck (\d+)\.(\d+)(?:\.\d+)?$',
                               invoke_cppcheck, flags=re.M)
     # Currently, only cppcheck version >= 2.7 is supported, but version 2.8 is
     # known to be broken, please refer to docs/misra/cppcheck.txt
@@ -166,15 +166,10 @@ def generate_cppcheck_deps():
             "Can't find cppcheck version or version not identified: "
             "{}".format(invoke_cppcheck)
         )
-    major = int(version_regex.group(1))
-    minor = int(version_regex.group(2))
-    if major < 2 or (major == 2 and minor < 7):
+    version = (int(version_regex.group(1)), int(version_regex.group(2)))
+    if version < (2, 7) or version == (2, 8):
         raise CppcheckDepsPhaseError(
-            "Cppcheck version < 2.7 is not supported"
-        )
-    if major == 2 and minor == 8:
-        raise CppcheckDepsPhaseError(
-            "Cppcheck version 2.8 is known to be broken, see the documentation"
+            "Cppcheck version < 2.7 or 2.8 are not supported"
         )
 
     # If misra option is selected, append misra addon and generate cppcheck
--
generated by git-patchbot for /home/xen/git/xen.git#master