[Flang] fatal internal error: nullptr dereference at llvm-project/flang/lib/Semantics/runtime-type-info.cpp(795)

[k-arrows]

Reproducible on Godbolt: https://godbolt.org/z/MPq6KEEvz

Reproducer:

module m
  type t(k1)
     integer,kind :: k1
  end type
  type s(l1)
     integer,len :: l1
     type(t(3)) :: t1
  end type
end module

Stack dump:

 #0 0x0000000003513fb8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3513fb8)
 #1 0x000000000351192c SignalHandler(int) Signals.cpp:0:0
 #2 0x00007fc3fc042520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #3 0x00007fc3fc0969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #4 0x00007fc3fc042476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #5 0x00007fc3fc0287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #6 0x0000000004992ea9 (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x4992ea9)
 #7 0x0000000003e199e9 Fortran::semantics::RuntimeTableBuilder::DescribeComponent(Fortran::semantics::Symbol const&, Fortran::semantics::ObjectEntityDetails const&, Fortran::semantics::Scope&, Fortran::semantics::Scope&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, std::vector<Fortran::common::Reference<Fortran::semantics::Symbol const>, std::allocator<Fortran::common::Reference<Fortran::semantics::Symbol const>>> const*) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e199e9)
 #8 0x0000000003e16b64 Fortran::semantics::RuntimeTableBuilder::DescribeType(Fortran::semantics::Scope&) (.part.0) runtime-type-info.cpp:0:0
 #9 0x0000000003e180e5 Fortran::semantics::RuntimeTableBuilder::DescribeTypes(Fortran::semantics::Scope&, bool) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e180e5)
#10 0x0000000003e1812f Fortran::semantics::RuntimeTableBuilder::DescribeTypes(Fortran::semantics::Scope&, bool) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e1812f)
#11 0x0000000003e1812f Fortran::semantics::RuntimeTableBuilder::DescribeTypes(Fortran::semantics::Scope&, bool) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e1812f)
#12 0x0000000003e181cb Fortran::semantics::BuildRuntimeDerivedTypeTables(Fortran::semantics::SemanticsContext&) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e181cb)
#13 0x000000000355883f Fortran::frontend::FrontendAction::generateRtTypeTables() (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x355883f)
#14 0x000000000386d128 Fortran::frontend::CodeGenAction::beginSourceFileAction() (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x386d128)
#15 0x0000000003556795 Fortran::frontend::FrontendAction::beginSourceFile(Fortran::frontend::CompilerInstance&, Fortran::frontend::FrontendInputFile const&) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3556795)
#16 0x0000000003546667 Fortran::frontend::CompilerInstance::executeAction(Fortran::frontend::FrontendAction&) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3546667)
#17 0x000000000355c9fd Fortran::frontend::executeCompilerInvocation(Fortran::frontend::CompilerInstance*) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x355c9fd)
#18 0x0000000001d57758 fc1_main(llvm::ArrayRef<char const*>, char const*) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x1d57758)
#19 0x0000000001c5e82d main (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x1c5e82d)
#20 0x00007fc3fc029d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#21 0x00007fc3fc029e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#22 0x0000000001d566be _start (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x1d566be)
flang-new: error: unable to execute command: Aborted (core dumped)
flang-new: error: flang frontend command failed due to signal (use -v to see invocation)
flang-new version 19.0.0git (https://github.com/llvm/llvm-project.git d0f44ed062d911953de157ee4d7db91003b9bd52)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin
flang-new: note: diagnostic msg:

[klausler]

#79609

[llvmbot]

@llvm/issue-subscribers-flang-frontend

Author: None (k-arrows)

Reproducible on Godbolt: https://godbolt.org/z/MPq6KEEvz

Reproducer:

module m
  type t(k1)
     integer,kind :: k1
  end type
  type s(l1)
     integer,len :: l1
     type(t(3)) :: t1
  end type
end module

Stack dump:

 #<!-- -->0 0x0000000003513fb8 llvm::sys::PrintStackTrace(llvm::raw_ostream&amp;, int) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3513fb8)
 #<!-- -->1 0x000000000351192c SignalHandler(int) Signals.cpp:0:0
 #<!-- -->2 0x00007fc3fc042520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #<!-- -->3 0x00007fc3fc0969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #<!-- -->4 0x00007fc3fc042476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #<!-- -->5 0x00007fc3fc0287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #<!-- -->6 0x0000000004992ea9 (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x4992ea9)
 #<!-- -->7 0x0000000003e199e9 Fortran::semantics::RuntimeTableBuilder::DescribeComponent(Fortran::semantics::Symbol const&amp;, Fortran::semantics::ObjectEntityDetails const&amp;, Fortran::semantics::Scope&amp;, Fortran::semantics::Scope&amp;, std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt;&gt; const&amp;, std::vector&lt;Fortran::common::Reference&lt;Fortran::semantics::Symbol const&gt;, std::allocator&lt;Fortran::common::Reference&lt;Fortran::semantics::Symbol const&gt;&gt;&gt; const*) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e199e9)
 #<!-- -->8 0x0000000003e16b64 Fortran::semantics::RuntimeTableBuilder::DescribeType(Fortran::semantics::Scope&amp;) (.part.0) runtime-type-info.cpp:0:0
 #<!-- -->9 0x0000000003e180e5 Fortran::semantics::RuntimeTableBuilder::DescribeTypes(Fortran::semantics::Scope&amp;, bool) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e180e5)
#<!-- -->10 0x0000000003e1812f Fortran::semantics::RuntimeTableBuilder::DescribeTypes(Fortran::semantics::Scope&amp;, bool) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e1812f)
#<!-- -->11 0x0000000003e1812f Fortran::semantics::RuntimeTableBuilder::DescribeTypes(Fortran::semantics::Scope&amp;, bool) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e1812f)
#<!-- -->12 0x0000000003e181cb Fortran::semantics::BuildRuntimeDerivedTypeTables(Fortran::semantics::SemanticsContext&amp;) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e181cb)
#<!-- -->13 0x000000000355883f Fortran::frontend::FrontendAction::generateRtTypeTables() (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x355883f)
#<!-- -->14 0x000000000386d128 Fortran::frontend::CodeGenAction::beginSourceFileAction() (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x386d128)
#<!-- -->15 0x0000000003556795 Fortran::frontend::FrontendAction::beginSourceFile(Fortran::frontend::CompilerInstance&amp;, Fortran::frontend::FrontendInputFile const&amp;) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3556795)
#<!-- -->16 0x0000000003546667 Fortran::frontend::CompilerInstance::executeAction(Fortran::frontend::FrontendAction&amp;) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3546667)
#<!-- -->17 0x000000000355c9fd Fortran::frontend::executeCompilerInvocation(Fortran::frontend::CompilerInstance*) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x355c9fd)
#<!-- -->18 0x0000000001d57758 fc1_main(llvm::ArrayRef&lt;char const*&gt;, char const*) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x1d57758)
#<!-- -->19 0x0000000001c5e82d main (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x1c5e82d)
#<!-- -->20 0x00007fc3fc029d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#<!-- -->21 0x00007fc3fc029e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#<!-- -->22 0x0000000001d566be _start (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x1d566be)
flang-new: error: unable to execute command: Aborted (core dumped)
flang-new: error: flang frontend command failed due to signal (use -v to see invocation)
flang-new version 19.0.0git (https://github.com/llvm/llvm-project.git d0f44ed062d911953de157ee4d7db91003b9bd52)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin
flang-new: note: diagnostic msg:

[llvmbot]

@llvm/issue-subscribers-bug

Author: None (k-arrows)

Reproducible on Godbolt: https://godbolt.org/z/MPq6KEEvz

Reproducer:

module m
  type t(k1)
     integer,kind :: k1
  end type
  type s(l1)
     integer,len :: l1
     type(t(3)) :: t1
  end type
end module

Stack dump:

 #<!-- -->0 0x0000000003513fb8 llvm::sys::PrintStackTrace(llvm::raw_ostream&amp;, int) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3513fb8)
 #<!-- -->1 0x000000000351192c SignalHandler(int) Signals.cpp:0:0
 #<!-- -->2 0x00007fc3fc042520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #<!-- -->3 0x00007fc3fc0969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #<!-- -->4 0x00007fc3fc042476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #<!-- -->5 0x00007fc3fc0287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #<!-- -->6 0x0000000004992ea9 (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x4992ea9)
 #<!-- -->7 0x0000000003e199e9 Fortran::semantics::RuntimeTableBuilder::DescribeComponent(Fortran::semantics::Symbol const&amp;, Fortran::semantics::ObjectEntityDetails const&amp;, Fortran::semantics::Scope&amp;, Fortran::semantics::Scope&amp;, std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt;&gt; const&amp;, std::vector&lt;Fortran::common::Reference&lt;Fortran::semantics::Symbol const&gt;, std::allocator&lt;Fortran::common::Reference&lt;Fortran::semantics::Symbol const&gt;&gt;&gt; const*) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e199e9)
 #<!-- -->8 0x0000000003e16b64 Fortran::semantics::RuntimeTableBuilder::DescribeType(Fortran::semantics::Scope&amp;) (.part.0) runtime-type-info.cpp:0:0
 #<!-- -->9 0x0000000003e180e5 Fortran::semantics::RuntimeTableBuilder::DescribeTypes(Fortran::semantics::Scope&amp;, bool) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e180e5)
#<!-- -->10 0x0000000003e1812f Fortran::semantics::RuntimeTableBuilder::DescribeTypes(Fortran::semantics::Scope&amp;, bool) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e1812f)
#<!-- -->11 0x0000000003e1812f Fortran::semantics::RuntimeTableBuilder::DescribeTypes(Fortran::semantics::Scope&amp;, bool) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e1812f)
#<!-- -->12 0x0000000003e181cb Fortran::semantics::BuildRuntimeDerivedTypeTables(Fortran::semantics::SemanticsContext&amp;) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3e181cb)
#<!-- -->13 0x000000000355883f Fortran::frontend::FrontendAction::generateRtTypeTables() (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x355883f)
#<!-- -->14 0x000000000386d128 Fortran::frontend::CodeGenAction::beginSourceFileAction() (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x386d128)
#<!-- -->15 0x0000000003556795 Fortran::frontend::FrontendAction::beginSourceFile(Fortran::frontend::CompilerInstance&amp;, Fortran::frontend::FrontendInputFile const&amp;) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3556795)
#<!-- -->16 0x0000000003546667 Fortran::frontend::CompilerInstance::executeAction(Fortran::frontend::FrontendAction&amp;) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x3546667)
#<!-- -->17 0x000000000355c9fd Fortran::frontend::executeCompilerInvocation(Fortran::frontend::CompilerInstance*) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x355c9fd)
#<!-- -->18 0x0000000001d57758 fc1_main(llvm::ArrayRef&lt;char const*&gt;, char const*) (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x1d57758)
#<!-- -->19 0x0000000001c5e82d main (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x1c5e82d)
#<!-- -->20 0x00007fc3fc029d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#<!-- -->21 0x00007fc3fc029e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#<!-- -->22 0x0000000001d566be _start (/opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin/flang-new+0x1d566be)
flang-new: error: unable to execute command: Aborted (core dumped)
flang-new: error: flang frontend command failed due to signal (use -v to see invocation)
flang-new version 19.0.0git (https://github.com/llvm/llvm-project.git d0f44ed062d911953de157ee4d7db91003b9bd52)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/compiler-explorer/clang-llvmflang-trunk-20240126/bin
flang-new: note: diagnostic msg: