<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/116358>116358</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [MLIR]``-test-func-erase-arg` triggers Assertion Failure `!NodePtr->isKnownSentinel()'
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            mlir
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          xisang0
      </td>
    </tr>
</table>

<pre>
    Test on commit: https://github.com/llvm/llvm-project/commit/6548b6354d1d990e1c98736f5e7c3de876bedc8e
steps to reproduce:
```
mlir-opt test.mlir --test-func-erase-arg
```
test case:
```
module {
  llvm.func @malloc(i64) -> !llvm.ptr
}
```
crash trace:
```
mlir-opt: /home/workdir/llvm-project-19/llvm/include/llvm/ADT/ilist_iterator.h:168: reference llvm::ilist_iterator<llvm::ilist_detail::node_options<mlir::Block, true, false, void, false, void>, false, false>::operator*() const [OptionsT = llvm::ilist_detail::node_options<mlir::Block, true, false, void, false, void>, IsReverse = false, IsConst = false]: Assertion `!NodePtr->isKnownSentinel()' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: ./mlir-opt /home/workdir/test.mlir --test-func-erase-arg
 #0 0x00006323c2d643b8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (./mlir-opt+0x10723b8)
 #1 0x00006323c2d61ede llvm::sys::RunSignalHandlers() (./mlir-opt+0x106fede)
 #2 0x00006323c2d64dc8 SignalHandler(int) Signals.cpp:0:0
 #3 0x00007337c4053520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007337c40a79fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x00007337c4053476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x00007337c40397f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x00007337c403971b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x00007337c404ae96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x00006323c8156294 (./mlir-opt+0x6464294)
#10 0x00006323c5eba304 (anonymous namespace)::TestFuncEraseArg::runOnOperation() TestFunc.cpp:0:0
#11 0x00006323c5fe06df mlir::detail::OpToOpPassAdaptor::run(mlir::Pass*, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int) (./mlir-opt+0x42ee6df)
#12 0x00006323c5fe0ec2 mlir::detail::OpToOpPassAdaptor::runPipeline(mlir::OpPassManager&, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int, mlir::PassInstrumentor*, mlir::PassInstrumentation::PipelineParentInfo const*) (./mlir-opt+0x42eeec2)
#13 0x00006323c5fe366e mlir::PassManager::run(mlir::Operation*) (./mlir-opt+0x42f166e)
#14 0x00006323c5fdc192 performActions(llvm::raw_ostream&, std::shared_ptr<llvm::SourceMgr> const&, mlir::MLIRContext*, mlir::MlirOptMainConfig const&) MlirOptMain.cpp:0:0
#15 0x00006323c5fdbdfb llvm::LogicalResult llvm::function_ref<llvm::LogicalResult (std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>::callback_fn<mlir::MlirOptMain(llvm::raw_ostream&, std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&)::$_0>(long, std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&) MlirOptMain.cpp:0:0
#16 0x00006323c6085ae5 mlir::splitAndProcessBuffer(std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, llvm::function_ref<llvm::LogicalResult (std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>, llvm::raw_ostream&, llvm::StringRef, llvm::StringRef) (./mlir-opt+0x4393ae5)
#17 0x00006323c5fd6ff2 mlir::MlirOptMain(llvm::raw_ostream&, std::unique_ptr<llvm::MemoryBuffer, std::default_delete<llvm::MemoryBuffer>>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&) (./mlir-opt+0x42e4ff2)
#18 0x00006323c5fd72a3 mlir::MlirOptMain(int, char**, llvm::StringRef, llvm::StringRef, mlir::DialectRegistry&) (./mlir-opt+0x42e52a3)
#19 0x00006323c5fd74b2 mlir::MlirOptMain(int, char**, llvm::StringRef, mlir::DialectRegistry&) (./mlir-opt+0x42e54b2)
#20 0x00006323c2d435d7 main (./mlir-opt+0x10515d7)
#21 0x00007337c403ad90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#22 0x00007337c403ae40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#23 0x00006323c2d43145 _start (./mlir-opt+0x1051145)
Aborted (core dumped)
```
</pre>
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