[clazy] [Bug 438976] New: Clazy crashes when parsing Qt 6.1.0 <QtTest> with old-style-connect check enabled

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https://bugs.kde.org/show_bug.cgi?id=438976

            Bug ID: 438976
           Summary: Clazy crashes when parsing Qt 6.1.0 <QtTest> with
                    old-style-connect check enabled
           Product: clazy
           Version: unspecified
          Platform: Compiled Sources
                OS: macOS
            Status: REPORTED
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: ts826848+kde at gmail.com
                CC: smartins at kde.org
  Target Milestone: ---

Created attachment 139560
  --> https://bugs.kde.org/attachment.cgi?id=139560&action=edit
stderr from crash

SUMMARY

Clazy v1.9 compiled against LLVM/Clang 11.1.0 segfaults when parsing <QtTest>
from Qt 6.1.0 with old-style-connect check enabled

STEPS TO REPRODUCE

1. Install llvm at 11 and qt (currently Qt 6.1.0) from Homebrew
2. Check out tag v1.9 from clazy repo
3. Compile/install clazy using CXX=/usr/local/opt/llvm at 11/bin/clang++ and
LLVM_ROOT=/usr/local/opt/llvm at 11
4. $ export CLANGXX=/usr/local/opt/llvm at 11/bin/clang++
5. $ cd /tmp
6. $ echo "#include <QtTest>" > test.cpp
7. $ clazy -std=c++17 -iframework /usr/local/lib -isystem
/usr/local/opt/qt/Frameworks/QtTest.framework/Headers -Xclang -plugin-arg-clazy
-Xclang  old-style-connect -c test.cpp

OBSERVED RESULT

Clang segfaults; stderr in attachment.

EXPECTED RESULT

Clang successfully compiles test.cpp

SOFTWARE/OS VERSIONS
macOS: 10.15.7
Qt Version: 6.1.0

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