[Flang][OpenACC] fatal internal error: SemanticsContext::FindScope(): invalid source location for 'declare'

[k-arrows]

Reproducer:
https://godbolt.org/z/Ej1jY5eaG

!$acc declare
end

Backtrace:

fatal internal error: SemanticsContext::FindScope(): invalid source location for 'declare'
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang -fc1 -triple x86_64-unknown-linux-gnu -S -fopenacc -mrelocation-model pic -pic-level 2 -pic-is-pie -target-cpu x86-64 -mllvm -x86-asm-syntax=intel -resource-dir /opt/compiler-explorer/clang-llvmflang-trunk-20250523/lib/clang/21 -mframe-pointer=all -o /app/output.s -x f95 /app/example.f90
 #0 0x0000000003e7dcd8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x3e7dcd8)
 #1 0x0000000003e7b894 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #2 0x000076ba09a42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #3 0x000076ba09a969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #4 0x000076ba09a42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #5 0x000076ba09a287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #6 0x0000000005b71529 (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x5b71529)
 #7 0x00000000049a6329 (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x49a6329)
 #8 0x0000000004d13c8a void Fortran::parser::detail::ParseTreeVisitorLookupScope::ForEachInTuple<0ul, void Fortran::parser::detail::ParseTreeVisitorLookupScope::Walk<Fortran::semantics::AccAttributeVisitor, std::__cxx11::list<Fortran::parser::OpenACCDeclarativeConstruct, std::allocator<Fortran::parser::OpenACCDeclarativeConstruct>>, std::__cxx11::list<Fortran::parser::OpenMPDeclarativeConstruct, std::allocator<Fortran::parser::OpenMPDeclarativeConstruct>>, std::__cxx11::list<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>, std::allocator<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>>>, Fortran::parser::ImplicitPart, std::__cxx11::list<Fortran::parser::DeclarationConstruct, std::allocator<Fortran::parser::DeclarationConstruct>>>(std::tuple<std::__cxx11::list<Fortran::parser::OpenACCDeclarativeConstruct, std::allocator<Fortran::parser::OpenACCDeclarativeConstruct>>, std::__cxx11::list<Fortran::parser::OpenMPDeclarativeConstruct, std::allocator<Fortran::parser::OpenMPDeclarativeConstruct>>, std::__cxx11::list<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>, std::allocator<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>>>, Fortran::parser::ImplicitPart, std::__cxx11::list<Fortran::parser::DeclarationConstruct, std::allocator<Fortran::parser::DeclarationConstruct>>> const&, Fortran::semantics::AccAttributeVisitor&)::'lambda'(Fortran::semantics::AccAttributeVisitor const&), std::tuple<std::__cxx11::list<Fortran::parser::OpenACCDeclarativeConstruct, std::allocator<Fortran::parser::OpenACCDeclarativeConstruct>>, std::__cxx11::list<Fortran::parser::OpenMPDeclarativeConstruct, std::allocator<Fortran::parser::OpenMPDeclarativeConstruct>>, std::__cxx11::list<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>, std::allocator<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>>>, Fortran::parser::ImplicitPart, std::__cxx11::list<Fortran::parser::DeclarationConstruct, std::allocator<Fortran::parser::DeclarationConstruct>>>>(std::tuple<std::__cxx11::list<Fortran::parser::OpenACCDeclarativeConstruct, std::allocator<Fortran::parser::OpenACCDeclarativeConstruct>>, std::__cxx11::list<Fortran::parser::OpenMPDeclarativeConstruct, std::allocator<Fortran::parser::OpenMPDeclarativeConstruct>>, std::__cxx11::list<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>, std::allocator<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>>>, Fortran::parser::ImplicitPart, std::__cxx11::list<Fortran::parser::DeclarationConstruct, std::allocator<Fortran::parser::DeclarationConstruct>>> const&, void Fortran::parser::detail::ParseTreeVisitorLookupScope::Walk<Fortran::semantics::AccAttributeVisitor, std::__cxx11::list<Fortran::parser::OpenACCDeclarativeConstruct, std::allocator<Fortran::parser::OpenACCDeclarativeConstruct>>, std::__cxx11::list<Fortran::parser::OpenMPDeclarativeConstruct, std::allocator<Fortran::parser::OpenMPDeclarativeConstruct>>, std::__cxx11::list<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>, std::allocator<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>>>, Fortran::parser::ImplicitPart, std::__cxx11::list<Fortran::parser::DeclarationConstruct, std::allocator<Fortran::parser::DeclarationConstruct>>>(std::tuple<std::__cxx11::list<Fortran::parser::OpenACCDeclarativeConstruct, std::allocator<Fortran::parser::OpenACCDeclarativeConstruct>>, std::__cxx11::list<Fortran::parser::OpenMPDeclarativeConstruct, std::allocator<Fortran::parser::OpenMPDeclarativeConstruct>>, std::__cxx11::list<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>, std::allocator<Fortran::common::Indirection<Fortran::parser::CompilerDirective, false>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::UseStmt, false>>>>, std::__cxx11::list<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>, std::allocator<Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::ImportStmt, false>>>>, Fortran::parser::ImplicitPart, std::__cxx11::list<Fortran::parser::DeclarationConstruct, std::allocator<Fortran::parser::DeclarationConstruct>>> const&, Fortran::semantics::AccAttributeVisitor&)::'lambda'(Fortran::semantics::AccAttributeVisitor const&)) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x4d13c8a)
 #9 0x0000000004d19839 Fortran::semantics::ResolveAccParts(Fortran::semantics::SemanticsContext&, Fortran::parser::ProgramUnit const&, Fortran::semantics::Scope*) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x4d19839)
#10 0x000000000498479b Fortran::semantics::ResolveNamesVisitor::Pre(Fortran::parser::ProgramUnit const&) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x498479b)
#11 0x0000000004985cf1 Fortran::semantics::ResolveNames(Fortran::semantics::SemanticsContext&, Fortran::parser::Program const&, Fortran::semantics::Scope&) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x4985cf1)
#12 0x00000000049f3446 Fortran::semantics::Semantics::Perform() (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x49f3446)
#13 0x0000000003ed6588 Fortran::frontend::FrontendAction::runSemanticChecks() (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x3ed6588)
#14 0x0000000004188250 Fortran::frontend::CodeGenAction::beginSourceFileAction() (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x4188250)
#15 0x0000000003ed51c5 Fortran::frontend::FrontendAction::beginSourceFile(Fortran::frontend::CompilerInstance&, Fortran::frontend::FrontendInputFile const&) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x3ed51c5)
#16 0x0000000003ec3cc7 Fortran::frontend::CompilerInstance::executeAction(Fortran::frontend::FrontendAction&) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x3ec3cc7)
#17 0x0000000003edeb33 Fortran::frontend::executeCompilerInvocation(Fortran::frontend::CompilerInstance*) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x3edeb33)
#18 0x00000000021ef16a fc1_main(llvm::ArrayRef<char const*>, char const*) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x21ef16a)
#19 0x00000000020a5fff main (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x20a5fff)
#20 0x000076ba09a29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#21 0x000076ba09a29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#22 0x00000000021edb35 _start (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x21edb35)
flang-21: error: unable to execute command: Aborted (core dumped)
flang-21: error: flang frontend command failed due to signal (use -v to see invocation)
flang version 21.0.0git (https://github.com/llvm/llvm-project.git d6596482ef277269dd35b5ea0c0439173cba7636)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin
flang-21: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
flang-21: note: diagnostic msg: /tmp/example-e268c7
flang-21: note: diagnostic msg: /tmp/example-e268c7.sh
flang-21: note: diagnostic msg: 

********************
Compiler returned: 254

[llvmbot]

@llvm/issue-subscribers-flang-frontend

Author: None (k-arrows)

Reproducer: https://godbolt.org/z/Ej1jY5eaG ```f90 !$acc declare end ```

Backtrace:

fatal internal error: SemanticsContext::FindScope(): invalid source location for 'declare'
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang -fc1 -triple x86_64-unknown-linux-gnu -S -fopenacc -mrelocation-model pic -pic-level 2 -pic-is-pie -target-cpu x86-64 -mllvm -x86-asm-syntax=intel -resource-dir /opt/compiler-explorer/clang-llvmflang-trunk-20250523/lib/clang/21 -mframe-pointer=all -o /app/output.s -x f95 /app/example.f90
 #<!-- -->0 0x0000000003e7dcd8 llvm::sys::PrintStackTrace(llvm::raw_ostream&amp;, int) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x3e7dcd8)
 #<!-- -->1 0x0000000003e7b894 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #<!-- -->2 0x000076ba09a42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #<!-- -->3 0x000076ba09a969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #<!-- -->4 0x000076ba09a42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #<!-- -->5 0x000076ba09a287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #<!-- -->6 0x0000000005b71529 (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x5b71529)
 #<!-- -->7 0x00000000049a6329 (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x49a6329)
 #<!-- -->8 0x0000000004d13c8a void Fortran::parser::detail::ParseTreeVisitorLookupScope::ForEachInTuple&lt;0ul, void Fortran::parser::detail::ParseTreeVisitorLookupScope::Walk&lt;Fortran::semantics::AccAttributeVisitor, std::__cxx11::list&lt;Fortran::parser::OpenACCDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenACCDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::OpenMPDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenMPDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;, std::allocator&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;&gt;&gt;, Fortran::parser::ImplicitPart, std::__cxx11::list&lt;Fortran::parser::DeclarationConstruct, std::allocator&lt;Fortran::parser::DeclarationConstruct&gt;&gt;&gt;(std::tuple&lt;std::__cxx11::list&lt;Fortran::parser::OpenACCDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenACCDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::OpenMPDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenMPDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;, std::allocator&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;&gt;&gt;, Fortran::parser::ImplicitPart, std::__cxx11::list&lt;Fortran::parser::DeclarationConstruct, std::allocator&lt;Fortran::parser::DeclarationConstruct&gt;&gt;&gt; const&amp;, Fortran::semantics::AccAttributeVisitor&amp;)::'lambda'(Fortran::semantics::AccAttributeVisitor const&amp;), std::tuple&lt;std::__cxx11::list&lt;Fortran::parser::OpenACCDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenACCDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::OpenMPDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenMPDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;, std::allocator&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;&gt;&gt;, Fortran::parser::ImplicitPart, std::__cxx11::list&lt;Fortran::parser::DeclarationConstruct, std::allocator&lt;Fortran::parser::DeclarationConstruct&gt;&gt;&gt;&gt;(std::tuple&lt;std::__cxx11::list&lt;Fortran::parser::OpenACCDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenACCDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::OpenMPDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenMPDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;, std::allocator&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;&gt;&gt;, Fortran::parser::ImplicitPart, std::__cxx11::list&lt;Fortran::parser::DeclarationConstruct, std::allocator&lt;Fortran::parser::DeclarationConstruct&gt;&gt;&gt; const&amp;, void Fortran::parser::detail::ParseTreeVisitorLookupScope::Walk&lt;Fortran::semantics::AccAttributeVisitor, std::__cxx11::list&lt;Fortran::parser::OpenACCDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenACCDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::OpenMPDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenMPDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;, std::allocator&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;&gt;&gt;, Fortran::parser::ImplicitPart, std::__cxx11::list&lt;Fortran::parser::DeclarationConstruct, std::allocator&lt;Fortran::parser::DeclarationConstruct&gt;&gt;&gt;(std::tuple&lt;std::__cxx11::list&lt;Fortran::parser::OpenACCDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenACCDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::OpenMPDeclarativeConstruct, std::allocator&lt;Fortran::parser::OpenMPDeclarativeConstruct&gt;&gt;, std::__cxx11::list&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;, std::allocator&lt;Fortran::common::Indirection&lt;Fortran::parser::CompilerDirective, false&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::UseStmt, false&gt;&gt;&gt;&gt;, std::__cxx11::list&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;, std::allocator&lt;Fortran::parser::Statement&lt;Fortran::common::Indirection&lt;Fortran::parser::ImportStmt, false&gt;&gt;&gt;&gt;, Fortran::parser::ImplicitPart, std::__cxx11::list&lt;Fortran::parser::DeclarationConstruct, std::allocator&lt;Fortran::parser::DeclarationConstruct&gt;&gt;&gt; const&amp;, Fortran::semantics::AccAttributeVisitor&amp;)::'lambda'(Fortran::semantics::AccAttributeVisitor const&amp;)) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x4d13c8a)
 #<!-- -->9 0x0000000004d19839 Fortran::semantics::ResolveAccParts(Fortran::semantics::SemanticsContext&amp;, Fortran::parser::ProgramUnit const&amp;, Fortran::semantics::Scope*) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x4d19839)
#<!-- -->10 0x000000000498479b Fortran::semantics::ResolveNamesVisitor::Pre(Fortran::parser::ProgramUnit const&amp;) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x498479b)
#<!-- -->11 0x0000000004985cf1 Fortran::semantics::ResolveNames(Fortran::semantics::SemanticsContext&amp;, Fortran::parser::Program const&amp;, Fortran::semantics::Scope&amp;) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x4985cf1)
#<!-- -->12 0x00000000049f3446 Fortran::semantics::Semantics::Perform() (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x49f3446)
#<!-- -->13 0x0000000003ed6588 Fortran::frontend::FrontendAction::runSemanticChecks() (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x3ed6588)
#<!-- -->14 0x0000000004188250 Fortran::frontend::CodeGenAction::beginSourceFileAction() (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x4188250)
#<!-- -->15 0x0000000003ed51c5 Fortran::frontend::FrontendAction::beginSourceFile(Fortran::frontend::CompilerInstance&amp;, Fortran::frontend::FrontendInputFile const&amp;) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x3ed51c5)
#<!-- -->16 0x0000000003ec3cc7 Fortran::frontend::CompilerInstance::executeAction(Fortran::frontend::FrontendAction&amp;) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x3ec3cc7)
#<!-- -->17 0x0000000003edeb33 Fortran::frontend::executeCompilerInvocation(Fortran::frontend::CompilerInstance*) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x3edeb33)
#<!-- -->18 0x00000000021ef16a fc1_main(llvm::ArrayRef&lt;char const*&gt;, char const*) (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x21ef16a)
#<!-- -->19 0x00000000020a5fff main (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x20a5fff)
#<!-- -->20 0x000076ba09a29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#<!-- -->21 0x000076ba09a29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#<!-- -->22 0x00000000021edb35 _start (/opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin/flang+0x21edb35)
flang-21: error: unable to execute command: Aborted (core dumped)
flang-21: error: flang frontend command failed due to signal (use -v to see invocation)
flang version 21.0.0git (https://github.com/llvm/llvm-project.git d6596482ef277269dd35b5ea0c0439173cba7636)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/compiler-explorer/clang-llvmflang-trunk-20250523/bin
flang-21: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
flang-21: note: diagnostic msg: /tmp/example-e268c7
flang-21: note: diagnostic msg: /tmp/example-e268c7.sh
flang-21: note: diagnostic msg: 

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Compiler returned: 254