Issue 173523
Summary [flang] crashes on INTERFACE block with FUNCTION declaration containing ENTRY statement
Labels flang:frontend, crash
Assignees
Reporter k-arrows
    Reproducer:
https://godbolt.org/z/TnsbYbddj
```f90
interface
 function f()
    entry e()
  end function
end interface
end
```

Backtrace:
```console
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
Stack dump:
0.	Program arguments: /cefs/d6/d627a40be3938837fc12a226_clang-llvmflang-trunk-20251224/bin/flang -fc1 -triple x86_64-unknown-linux-gnu -S -mrelocation-model pic -pic-level 2 -pic-is-pie -target-cpu x86-64 -mllvm -x86-asm-syntax=intel -resource-dir /cefs/d6/d627a40be3938837fc12a226_clang-llvmflang-trunk-20251224/lib/clang/22 -mframe-pointer=all -o /app/output.s -x f95 /app/example.f90
 #0 0x000000000454c958 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/cefs/d6/d627a40be3938837fc12a226_clang-llvmflang-trunk-20251224/bin/flang+0x454c958)
 #1 0x0000000004549b24 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
 #2 0x000077759e642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #3 0x0000000004dc1a0e (anonymous namespace)::PFTBuilder::addEvaluation(Fortran::lower::pft::Evaluation&&) PFTBuilder.cpp:0:0
 #4 0x0000000004dcc73f void Fortran::parser::detail::ParseTreeVisitorLookupScope::ForEachInTuple<4ul, void Fortran::parser::detail::ParseTreeVisitorLookupScope::Walk<(anonymous namespace)::PFTBuilder, 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&, (anonymous namespace)::PFTBuilder&)::'lambda'((anonymous namespace)::PFTBuilder 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<(anonymous namespace)::PFTBuilder, 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&, (anonymous namespace)::PFTBuilder&)::'lambda'((anonymous namespace)::PFTBuilder const&)) PFTBuilder.cpp:0:0
 #5 0x0000000004dce4d7 void Fortran::parser::detail::ParseTreeVisitorLookupScope::ForEachInTuple<0ul, void Fortran::parser::detail::ParseTreeVisitorLookupScope::Walk<(anonymous namespace)::PFTBuilder, 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&, (anonymous namespace)::PFTBuilder&)::'lambda'((anonymous namespace)::PFTBuilder 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<(anonymous namespace)::PFTBuilder, 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&, (anonymous namespace)::PFTBuilder&)::'lambda'((anonymous namespace)::PFTBuilder const&)) PFTBuilder.cpp:0:0
 #6 0x0000000004dcea68 void Fortran::common::log2visit::Log2VisitHelper<0ul, 7ul, void, void Fortran::parser::detail::ParseTreeVisitorLookupScope::Walk<(anonymous namespace)::PFTBuilder, Fortran::common::Indirection<Fortran::parser::DerivedTypeDef, false>, Fortran::common::Indirection<Fortran::parser::EnumDef, false>, Fortran::parser::Statement<Fortran::common::Indirection<Fortran::parser::GenericStmt, false>>, Fortran::common::Indirection<Fortran::parser::Interf<truncated>Please see the issue for the entire body.
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