Clang 21 crash (Stack dump) when using _Atomic(struct) field access incorrectly in C code

[mariete1223]

Summary:

Clang 21 crashes with a segmentation fault (SIGSEGV) when compiling C code that uses _Atomic(struct) and tries to load and dereference a member incorrectly.
Instead of reporting a clean error about invalid atomic access, the compiler crashes during semantic analysis (Sema::RefersToMemberWithReducedAlignment).

Stack dump

Stack dump:
0.      Program arguments: /usr/local/bin/clang-21 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name prueba.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/root -fcoverage-compilation-dir=/root -resource-dir /usr/local/lib/clang/21 -internal-isystem /usr/local/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/9/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -std=c2x -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/prueba-4c1619.o -x c prueba.cpp
1.      prueba.cpp:12:38: current parser token ')'
2.      prueba.cpp:10:1: parsing function body 'main'
3.      prueba.cpp:10:1: in compound statement ('{}')
^[[A #0 0x000056358be8a18f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/local/bin/clang-21+0x3c4a18f)
 #1 0x000056358be87bd4 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #2 0x00007f65c50ae420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
 #3 0x000056358f68488b getInterestingTagDecl(clang::TagDecl*) Type.cpp:0:0
 #4 0x000056358e2ffb2b clang::Sema::RefersToMemberWithReducedAlignment(clang::Expr*, llvm::function_ref<void (clang::Expr*, clang::RecordDecl*, clang::FieldDecl*, clang::CharUnits)>) (/usr/local/bin/clang-21+0x60bfb2b)
 #5 0x000056358e300180 clang::Sema::CheckAddressOfPackedMember(clang::Expr*) (/usr/local/bin/clang-21+0x60c0180)
 #6 0x000056358e5cd823 clang::Sema::CheckAddressOfOperand(clang::ActionResult<clang::Expr*, true>&, clang::SourceLocation) (/usr/local/bin/clang-21+0x638d823)
 #7 0x000056358e5f1710 clang::Sema::CreateBuiltinUnaryOp(clang::SourceLocation, clang::UnaryOperatorKind, clang::Expr*, bool) (/usr/local/bin/clang-21+0x63b1710)
 #8 0x000056358e5f1f85 clang::Sema::BuildUnaryOp(clang::Scope*, clang::SourceLocation, clang::UnaryOperatorKind, clang::Expr*, bool) (/usr/local/bin/clang-21+0x63b1f85)
 #9 0x000056358e6fdb15 clang::TreeTransform<clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref<clang::ActionResult<clang::Expr*, true> (clang::Expr*)>)::TyposReplace>::TransformInitializer(clang::Expr*, bool) SemaExprCXX.cpp:0:0
#10 0x000056358e6fd892 clang::TreeTransform<clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref<clang::ActionResult<clang::Expr*, true> (clang::Expr*)>)::TyposReplace>::TransformExprs(clang::Expr* const*, unsigned int, bool, llvm::SmallVectorImpl<clang::Expr*>&, bool*) SemaExprCXX.cpp:0:0
#11 0x000056358e7047e1 clang::TreeTransform<clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref<clang::ActionResult<clang::Expr*, true> (clang::Expr*)>)::TyposReplace>::TransformCallExpr(clang::CallExpr*) SemaExprCXX.cpp:0:0
#12 0x000056358e715f64 clang::TreeTransform<clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref<clang::ActionResult<clang::Expr*, true> (clang::Expr*)>)::TyposReplace>::TransformCXXDependentScopeMemberExpr(clang::CXXDependentScopeMemberExpr*) SemaExprCXX.cpp:0:0
#13 0x000056358e71b813 clang::TreeTransform<clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref<clang::ActionResult<clang::Expr*, true> (clang::Expr*)>)::TyposReplace>::TransformUnaryOperator(clang::UnaryOperator*) SemaExprCXX.cpp:0:0
#14 0x000056358e6cd20d clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref<clang::ActionResult<clang::Expr*, true> (clang::Expr*)>) (/usr/local/bin/clang-21+0x648d20d)
#15 0x000056358e6ce45d clang::Sema::ActOnFinishFullExpr(clang::Expr*, clang::SourceLocation, bool, bool, bool) (/usr/local/bin/clang-21+0x648e45d)
#16 0x000056358e5e23b5 clang::Sema::ActOnCondition(clang::Scope*, clang::SourceLocation, clang::Expr*, clang::Sema::ConditionKind, bool) (/usr/local/bin/clang-21+0x63a23b5)
#17 0x000056358e1afef0 clang::Parser::ParseParenExprOrCondition(clang::ActionResult<clang::Stmt*, true>*, clang::Sema::ConditionResult&, clang::SourceLocation, clang::Sema::ConditionKind, clang::SourceLocation&, clang::SourceLocation&) (/usr/local/bin/clang-21+0x5f6fef0)
#18 0x000056358e1bb526 clang::Parser::ParseWhileStatement(clang::SourceLocation*) (/usr/local/bin/clang-21+0x5f7b526)
#19 0x000056358e1b211e clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) (/usr/local/bin/clang-21+0x5f7211e)
#20 0x000056358e1b3104 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/usr/local/bin/clang-21+0x5f73104)
#21 0x000056358e1b446c clang::Parser::ParseCompoundStatementBody(bool) (/usr/local/bin/clang-21+0x5f7446c)
#22 0x000056358e1b67e2 clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/usr/local/bin/clang-21+0x5f767e2)
#23 0x000056358e0ade83 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/usr/local/bin/clang-21+0x5e6de83)
#24 0x000056358e0f7f05 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/usr/local/bin/clang-21+0x5eb7f05)
#25 0x000056358e0a662d clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/usr/local/bin/clang-21+0x5e6662d)
#26 0x000056358e0a716e clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/usr/local/bin/clang-21+0x5e6716e)
#27 0x000056358e0b0d73 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/usr/local/bin/clang-21+0x5e70d73)
#28 0x000056358e0b26a8 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/usr/local/bin/clang-21+0x5e726a8)
#29 0x000056358e0a062a clang::ParseAST(clang::Sema&, bool, bool) (/usr/local/bin/clang-21+0x5e6062a)
#30 0x000056358c80ee45 clang::CodeGenAction::ExecuteAction() (/usr/local/bin/clang-21+0x45cee45)
#31 0x000056358caf39b8 clang::FrontendAction::Execute() (/usr/local/bin/clang-21+0x48b39b8)
#32 0x000056358ca71d3b clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/usr/local/bin/clang-21+0x4831d3b)
#33 0x000056358cbe5c7b clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/local/bin/clang-21+0x49a5c7b)
#34 0x00005635890e2f51 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/usr/local/bin/clang-21+0xea2f51)
#35 0x00005635890db5fd ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#36 0x00005635890de99f clang_main(int, char**, llvm::ToolContext const&) (/usr/local/bin/clang-21+0xe9e99f)
#37 0x0000563588fb130b main (/usr/local/bin/clang-21+0xd7130b)
#38 0x00007f65c4b5c083 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24083)
#39 0x00005635890db07e _start (/usr/local/bin/clang-21+0xe9b07e)

Program

#include <stdlib.h>
#include <pthread.h>
struct T {
 char value;
};
void* work(void* p) {
 struct T* t = (struct T*)p;
}
int main()
{
 _Atomic(struct T) t;
 while (!atomic_load(&t.value)->value)
  ;
 return t.value->value;
}

To quickly reproduce

https://gcc.godbolt.org/z/d6GbsWjq5

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: None (mariete1223)

## Summary:

Clang 21 crashes with a segmentation fault (SIGSEGV) when compiling C code that uses _Atomic(struct) and tries to load and dereference a member incorrectly.
Instead of reporting a clean error about invalid atomic access, the compiler crashes during semantic analysis (Sema::RefersToMemberWithReducedAlignment).

Stack dump

Stack dump:
0.      Program arguments: /usr/local/bin/clang-21 -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -dumpdir a- -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name prueba.cpp -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/root -fcoverage-compilation-dir=/root -resource-dir /usr/local/lib/clang/21 -internal-isystem /usr/local/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/9/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -std=c2x -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/prueba-4c1619.o -x c prueba.cpp
1.      prueba.cpp:12:38: current parser token ')'
2.      prueba.cpp:10:1: parsing function body 'main'
3.      prueba.cpp:10:1: in compound statement ('{}')
^[[A #<!-- -->0 0x000056358be8a18f llvm::sys::PrintStackTrace(llvm::raw_ostream&amp;, int) (/usr/local/bin/clang-21+0x3c4a18f)
 #<!-- -->1 0x000056358be87bd4 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #<!-- -->2 0x00007f65c50ae420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
 #<!-- -->3 0x000056358f68488b getInterestingTagDecl(clang::TagDecl*) Type.cpp:0:0
 #<!-- -->4 0x000056358e2ffb2b clang::Sema::RefersToMemberWithReducedAlignment(clang::Expr*, llvm::function_ref&lt;void (clang::Expr*, clang::RecordDecl*, clang::FieldDecl*, clang::CharUnits)&gt;) (/usr/local/bin/clang-21+0x60bfb2b)
 #<!-- -->5 0x000056358e300180 clang::Sema::CheckAddressOfPackedMember(clang::Expr*) (/usr/local/bin/clang-21+0x60c0180)
 #<!-- -->6 0x000056358e5cd823 clang::Sema::CheckAddressOfOperand(clang::ActionResult&lt;clang::Expr*, true&gt;&amp;, clang::SourceLocation) (/usr/local/bin/clang-21+0x638d823)
 #<!-- -->7 0x000056358e5f1710 clang::Sema::CreateBuiltinUnaryOp(clang::SourceLocation, clang::UnaryOperatorKind, clang::Expr*, bool) (/usr/local/bin/clang-21+0x63b1710)
 #<!-- -->8 0x000056358e5f1f85 clang::Sema::BuildUnaryOp(clang::Scope*, clang::SourceLocation, clang::UnaryOperatorKind, clang::Expr*, bool) (/usr/local/bin/clang-21+0x63b1f85)
 #<!-- -->9 0x000056358e6fdb15 clang::TreeTransform&lt;clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref&lt;clang::ActionResult&lt;clang::Expr*, true&gt; (clang::Expr*)&gt;)::TyposReplace&gt;::TransformInitializer(clang::Expr*, bool) SemaExprCXX.cpp:0:0
#<!-- -->10 0x000056358e6fd892 clang::TreeTransform&lt;clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref&lt;clang::ActionResult&lt;clang::Expr*, true&gt; (clang::Expr*)&gt;)::TyposReplace&gt;::TransformExprs(clang::Expr* const*, unsigned int, bool, llvm::SmallVectorImpl&lt;clang::Expr*&gt;&amp;, bool*) SemaExprCXX.cpp:0:0
#<!-- -->11 0x000056358e7047e1 clang::TreeTransform&lt;clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref&lt;clang::ActionResult&lt;clang::Expr*, true&gt; (clang::Expr*)&gt;)::TyposReplace&gt;::TransformCallExpr(clang::CallExpr*) SemaExprCXX.cpp:0:0
#<!-- -->12 0x000056358e715f64 clang::TreeTransform&lt;clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref&lt;clang::ActionResult&lt;clang::Expr*, true&gt; (clang::Expr*)&gt;)::TyposReplace&gt;::TransformCXXDependentScopeMemberExpr(clang::CXXDependentScopeMemberExpr*) SemaExprCXX.cpp:0:0
#<!-- -->13 0x000056358e71b813 clang::TreeTransform&lt;clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref&lt;clang::ActionResult&lt;clang::Expr*, true&gt; (clang::Expr*)&gt;)::TyposReplace&gt;::TransformUnaryOperator(clang::UnaryOperator*) SemaExprCXX.cpp:0:0
#<!-- -->14 0x000056358e6cd20d clang::Sema::CorrectDelayedTyposInExpr(clang::Expr*, clang::VarDecl*, bool, llvm::function_ref&lt;clang::ActionResult&lt;clang::Expr*, true&gt; (clang::Expr*)&gt;) (/usr/local/bin/clang-21+0x648d20d)
#<!-- -->15 0x000056358e6ce45d clang::Sema::ActOnFinishFullExpr(clang::Expr*, clang::SourceLocation, bool, bool, bool) (/usr/local/bin/clang-21+0x648e45d)
#<!-- -->16 0x000056358e5e23b5 clang::Sema::ActOnCondition(clang::Scope*, clang::SourceLocation, clang::Expr*, clang::Sema::ConditionKind, bool) (/usr/local/bin/clang-21+0x63a23b5)
#<!-- -->17 0x000056358e1afef0 clang::Parser::ParseParenExprOrCondition(clang::ActionResult&lt;clang::Stmt*, true&gt;*, clang::Sema::ConditionResult&amp;, clang::SourceLocation, clang::Sema::ConditionKind, clang::SourceLocation&amp;, clang::SourceLocation&amp;) (/usr/local/bin/clang-21+0x5f6fef0)
#<!-- -->18 0x000056358e1bb526 clang::Parser::ParseWhileStatement(clang::SourceLocation*) (/usr/local/bin/clang-21+0x5f7b526)
#<!-- -->19 0x000056358e1b211e clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector&lt;clang::Stmt*, 32u&gt;&amp;, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;) (/usr/local/bin/clang-21+0x5f7211e)
#<!-- -->20 0x000056358e1b3104 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector&lt;clang::Stmt*, 32u&gt;&amp;, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/usr/local/bin/clang-21+0x5f73104)
#<!-- -->21 0x000056358e1b446c clang::Parser::ParseCompoundStatementBody(bool) (/usr/local/bin/clang-21+0x5f7446c)
#<!-- -->22 0x000056358e1b67e2 clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&amp;) (/usr/local/bin/clang-21+0x5f767e2)
#<!-- -->23 0x000056358e0ade83 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&amp;, clang::Parser::ParsedTemplateInfo const&amp;, clang::Parser::LateParsedAttrList*) (/usr/local/bin/clang-21+0x5e6de83)
#<!-- -->24 0x000056358e0f7f05 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&amp;, clang::DeclaratorContext, clang::ParsedAttributes&amp;, clang::Parser::ParsedTemplateInfo&amp;, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/usr/local/bin/clang-21+0x5eb7f05)
#<!-- -->25 0x000056358e0a662d clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec&amp;, clang::AccessSpecifier) (/usr/local/bin/clang-21+0x5e6662d)
#<!-- -->26 0x000056358e0a716e clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/usr/local/bin/clang-21+0x5e6716e)
#<!-- -->27 0x000056358e0b0d73 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec*) (/usr/local/bin/clang-21+0x5e70d73)
#<!-- -->28 0x000056358e0b26a8 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr&lt;clang::DeclGroupRef&gt;&amp;, clang::Sema::ModuleImportState&amp;) (/usr/local/bin/clang-21+0x5e726a8)
#<!-- -->29 0x000056358e0a062a clang::ParseAST(clang::Sema&amp;, bool, bool) (/usr/local/bin/clang-21+0x5e6062a)
#<!-- -->30 0x000056358c80ee45 clang::CodeGenAction::ExecuteAction() (/usr/local/bin/clang-21+0x45cee45)
#<!-- -->31 0x000056358caf39b8 clang::FrontendAction::Execute() (/usr/local/bin/clang-21+0x48b39b8)
#<!-- -->32 0x000056358ca71d3b clang::CompilerInstance::ExecuteAction(clang::FrontendAction&amp;) (/usr/local/bin/clang-21+0x4831d3b)
#<!-- -->33 0x000056358cbe5c7b clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/usr/local/bin/clang-21+0x49a5c7b)
#<!-- -->34 0x00005635890e2f51 cc1_main(llvm::ArrayRef&lt;char const*&gt;, char const*, void*) (/usr/local/bin/clang-21+0xea2f51)
#<!-- -->35 0x00005635890db5fd ExecuteCC1Tool(llvm::SmallVectorImpl&lt;char const*&gt;&amp;, llvm::ToolContext const&amp;) driver.cpp:0:0
#<!-- -->36 0x00005635890de99f clang_main(int, char**, llvm::ToolContext const&amp;) (/usr/local/bin/clang-21+0xe9e99f)
#<!-- -->37 0x0000563588fb130b main (/usr/local/bin/clang-21+0xd7130b)
#<!-- -->38 0x00007f65c4b5c083 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24083)
#<!-- -->39 0x00005635890db07e _start (/usr/local/bin/clang-21+0xe9b07e)

Program

#include <stdlib.h>
#include <pthread.h>
struct T {
 char value;
};
void* work(void* p) {
 struct T* t = (struct T*)p;
}
int main()
{
 _Atomic(struct T) t;
 while (!atomic_load(&t.value)->value)
  ;
 return t.value->value;
}

To quickly reproduce

https://gcc.godbolt.org/z/d6GbsWjq5

[shafik]

Requires -std=c2x and optimization level is not required. Goes back to clang-15.

[shafik]

Is this fuzzer generated?

[mariete1223]

Yes, it is

[mariete1223]

I have uploaded recently a bunch of fuzzer generated crashes

[shafik]

Things to keep in mind. We receive a larger volume of bugs and we don't have the capacity to address all of them. So a large volume of fuzzer generated bugs won't likely be helpful, although a small number of high quality bugs can be useful. High quality is hard to define, but bugs that find regressions in a recent release will be some of the highest quality bugs.

Assertion builds are more useful in general b/c they normally crash earlier and the assertion usually is helpful in understanding the bug. Including the assertion is important.

Please also make an effort to search for duplicates or related bugs and mention them in the bug report. If it is an exact duplicate (the assertion and backtrace match perfectly) then just add your reproducer to the existing bug rather than creating a new bug report.

[mariete1223]

Thank you for the guidelines.
I tried to simplify the bugs found and check for duplicates, but I realize I haven't fully followed all the steps you mentioned. I will take this as a checklist for reporting future bugs.

Thank you again for the information and your time, and apologies for any inconvenience caused.