<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/138405>138405</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang-tidy] Segmentation fault in clang::FormatASTNodeDiagnosticArgument
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang,
            clang-tidy
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          clee01
      </td>
    </tr>
</table>

<pre>
    - version
  - clang-tidy: 5.0.1
  - g++: 9.3.1
  - with -std=c++17
- backtrace
```
#0  0x00007fe61590b976 in clang::FormatASTNodeDiagnosticArgument(clang::DiagnosticsEngine::ArgumentKind, long, llvm::StringRef, llvm::StringRef, llvm::ArrayRef<std::pair<clang::DiagnosticsEngine::ArgumentKind, long> >, llvm::SmallVectorImpl<char>&, void*, llvm::ArrayRef<long>) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangAST.so.5
#1 0x00007fe6151bc32f in clang::Diagnostic::FormatDiagnostic(char const*, char const*, llvm::SmallVectorImpl<char>&) const () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangBasic.so.5
#2 0x00007fe614e7b94b in clang::tidy::ClangTidyDiagnosticConsumer::HandleDiagnostic(clang::DiagnosticsEngine::Level, clang::Diagnostic const&) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangTidy.so.5
#3 0x00007fe6151c0360 in clang::DiagnosticIDs::EmitDiag(clang::DiagnosticsEngine&, clang::DiagnosticIDs::Level) const () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangBasic.so.5
#4 0x00007fe6151c18f2 in clang::DiagnosticIDs::ProcessDiag(clang::DiagnosticsEngine&) const () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangBasic.so.5
#5 0x00007fe6151ba134 in clang::DiagnosticsEngine::EmitCurrentDiagnostic(bool) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangBasic.so.5
#6 0x00007fe612c7b2d6 in clang::tidy::readability::RedundantMemberInitCheck::check(clang::ast_matchers::MatchFinder::MatchResult const&) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangTidyReadabilityModule.so.5
#7 0x00007fe6155b7c2f in clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor::MatchVisitor::visitMatch(clang::ast_matchers::BoundNodes const&) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#8 0x00007fe6155d8c2b in clang::ast_matchers::internal::BoundNodesTreeBuilder::visitMatches(clang::ast_matchers::internal::BoundNodesTreeBuilder::Visitor*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#9 0x00007fe6155bbf45 in clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor::matchWithFilter(clang::ast_type_traits::DynTypedNode const&) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#10 0x00007fe6155d0ec8 in clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#11 0x00007fe6155d196a in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDeclContextHelper(clang::DeclContext*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#12 0x00007fe6155cff69 in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#13 0x00007fe6155d0ed3 in clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#14 0x00007fe6155cfa40 in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#15 0x00007fe6155d0ed3 in clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#16 0x00007fe6155d196a in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDeclContextHelper(clang::DeclContext*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#17 0x00007fe6155d045a in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#18 0x00007fe6155d0ed3 in clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#19 0x00007fe6155d196a in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDeclContextHelper(clang::DeclContext*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#20 0x00007fe6155d045a in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#21 0x00007fe6155d0ed3 in clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#22 0x00007fe6155d196a in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDeclContextHelper(clang::DeclContext*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#23 0x00007fe6155d045a in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#24 0x00007fe6155d0ed3 in clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#25 0x00007fe6155d196a in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDeclContextHelper(clang::DeclContext*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#26 0x00007fe6155cfab1 in clang::RecursiveASTVisitor<clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor>::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#27 0x00007fe6155d0ed3 in clang::ast_matchers::internal::(anonymous namespace)::MatchASTVisitor::TraverseDecl(clang::Decl*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#28 0x00007fe6155d126b in clang::ast_matchers::MatchFinder::matchAST(clang::ASTContext&) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangASTMatchers.so.5
#29 0x00007fe610c4b078 in clang::MultiplexConsumer::HandleTranslationUnit(clang::ASTContext&) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/../lib64/libclangFrontend.so.5
#30 0x00007fe60e8476cb in clang::ParseAST(clang::Sema&, bool, bool) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/../lib64/../lib64/libclangParse.so.5
#31 0x00007fe610c2429e in clang::FrontendAction::Execute() () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/../lib64/libclangFrontend.so.5
#32 0x00007fe610becc85 in clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/../lib64/libclangFrontend.so.5
#33 0x00007fe61299276a in clang::tooling::FrontendActionFactory::runInvocation(std::shared_ptr<clang::CompilerInvocation>, clang::FileManager*, std::shared_ptr<clang::PCHContainerOperations>, clang::DiagnosticConsumer*) ()
   from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangTooling.so.5
#34 0x00007fe61298b9ec in clang::tooling::ToolInvocation::runInvocation(char const*, clang::driver::Compilation*, std::shared_ptr<clang::CompilerInvocation>, std::shared_ptr<clang::PCHContainerOperations>) ()
   from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangTooling.so.5
#35 0x00007fe61299019e in clang::tooling::ToolInvocation::run() () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangTooling.so.5
#36 0x00007fe6129913e3 in clang::tooling::ClangTool::run(clang::tooling::ToolAction*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangTooling.so.5
#37 0x00007fe614e639e2 in clang::tidy::runClangTidy(clang::tidy::ClangTidyContext&, clang::tooling::CompilationDatabase const&, llvm::ArrayRef<std::string>, clang::tidy::ProfileData*) () from /opt/rh/llvm-toolset-7/root/usr/bin/../lib64/libclangTidy.so.5
#38 0x0000000000429dc8 in clang::tidy::clangTidyMain(int, char const**) ()
#39 0x00007fe611611555 in __libc_start_main () from /usr/lib64/libc.so.6
#40 0x00000000004193be in _start ()
```
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzsWk1v4zgS_TXyRYhBUd8HHxQ7Rge72W0k3tljQFFlmzsSaZCUt_PvB5TkWKKcdmZ64g7Qbhhwq0RR9V69IitmEaXYhgPMnPDWCRcTUuutkDNaAiBvkoviZXbj7kEqJriDMte9cWlJ-OZGs-LF8TM3nKKp193ZOPjWfPzMTaf-q_n_TG_dG6ULx1_QdogXOyi7cXNCf9eSUHBQ5kSo-6DMwT5yXfQNIYTiNURemKI8jSOX8fb1jp85frYUsiI6e1r9SxSwYGTDhdKMZnJTV8C1g5Pe4ON9dcc3jENrPgz-B-OFg-duKfim-S73VTviSUvGN4-wfpc5k5K8GKs_bxAb244w6fjzv-iMf-c6_p318oqU5W9AtZD31a40k2-JbIZFZuResMLB2ZuudRM7OHUdnJivtRSV6-Cl2GkHL-XWwUvz5I0WolSgb2JjFcLcrJV08DJn3MHL6dQMZHkUtN8NxuxpNVViGraR9AaB9HLq47UVyCMd_cD2rDgx-FwquNIdrpHhveyk7VMfAfyWKEZ70HEfegBxnga5Bb3LI8fP5sa4YsXLEfdccFVXINsBXwgvShiyclZS_4Q9lA1fp4YeCIw-SAkGTo8PfygFivwIvSmF-4VqTXcVa7RwDm8r_e_P1dFxQQ0EFmYvWePzmL9KQUGp98K-IJ7QSmfi-cGbeAZSNHGc11ICH6Z2LkT5QfqznY_6zmMa57iwN5VjQkogBclZyXRneISi5gXh-gGqHOQ9Z3q-Bfp7e5c2_x0Eiyj9XBFNtyC7uD6YqyXjxSGpG8MjqLrUl0jGxyOmB1HUJfTIiQeRDfOYjhbqMSDGNUhOyvbKwQnhgr9UolYuJxWondndcdoDmz2tfmOKadFnYGDZm4vGfI7OW1Hzwuz-6qPJy55WD92re5QlQ8qKhGJ7gT9H2RHCSgLc1qx81caRB1DnmHj3pAemzaZ5QaZSS1z5OggvIK5mvv8yvV2yUoMcs6hfdvCsJWG6e-fiha9edtCw93NE5SFLVQhocgGuVpKYSh8WQEtr02kslxWM51kseGlELBYegdZSsT30ocw_kKa7MVNzwTV801-g3Nn66t2-OHt4yB5dr6P0E7L3CXTmj7Kt8H-9bAtsvZDALs2vemmYCq96wb4XXVfnH2AvtjUUhJ-RvU-gM7vC_jWzLb1m219nD4_q6Wu2vcGUXXP_ktmG8TXbfoC9UT19zbY3mAqu2YZ9bNfT12z7M-xFo7_bcu8TsvcJdDaquX_JbLPraQ9H53-xHp1aVB3SIaDsafWaBpf9yRQPCmREgxzF9k-mD3Wp2a6Eb6dOVVeScFUSzQT_D2f6crhOglxK8zpe9I9O-0UsgiSII2oH7iuRCkZReYKKdGej7Unb4fvjcJwE1XjXR-QNY4YDnILd4dERkVETmdZ29w1oraHz_WeEYlAfohwoTeyzjLmodqwEec-VJpzCwPUOzSBKFtKfp7NB-YbTFMej7di8l512fEmoFvJwgFrze74XlHRwXxti1JZIKJ532tqIjqy9PtV2vvSJYiU8EE42ILvGj7PTfp1_MflLGAf57x3IZmY1nvpE40V_eW7amf7eE9mWyD79wZD-JE-Bfo9-M0WfrlO8j3tnjpMVku0PS2FLf_fU-6h9M2I_EpSLEh5aekfeaBV6D-F__3L0HZ8jy2fPB7uUGfg8P8zTd_d7AA-r0EcVJycwxcNeqchPwe6T6bVm1Py1XcqCMu6n6u_d87c5Oop_QTTJieof_55r8VNNN-B4STm681WKNSvBzP2BvFr9Vodqr_0X4LQYnSQfPXyd4YGYNySM6xONdsMF0bxkUHt5keeFYbMdPj8bt56VJtIUlIzbiFs4fQzG96jrm0JD373Uz5vEbCfsuXBoHJ0UM79I_ZRMYObFQYQTPw2CyXYWE-RHgbdeJ0UeIMjTuEhJiHJMaJRHeTxhM4xwiELke0GIcTClUQQ4SQlg7HsBpk6AoCKsnJrITIXcTJhSNcw8PwlQOClJDqVqemgxbrnF2MHzw1XbLYuxEy4mctZEN683yglQyZRWx1k102XTi9t7LFy4T7CpgOtGnO6a1KX-c52wk1qWs63Wu6aex0sHLzdMb-t8SkXV6e0gu50U_wNq1NZAVA5edij3M_xHAAAA__8LusBf">