[mlir] Assertion `idx < size() && "index out of bounds"' failed.

Nobody has claimed this yet.

git version: 4281db2755459933c68aa95a17f2518ef8317889

system: `Ubuntu 18.04.6 LTS`

reproduce with: `mlir-opt -test-func-insert-arg a.mlir`

a.mlir:

```mlir
module {
llvm.func @f(%arg0: i1 {test.A}) attributes {test.insert_args = [[0], [1, 0]]} {
%0 = "emitc.constant"() <{value = 1 : index}> : () -> !emitc.size_t
%1 = "emitc.constant"() <{value = 0 : index}> : () -> !emitc.size_t
%2 = builtin.unrealized_conversion_cast %1 : !emitc.size_t to index
%3 = "emitc.constant"() <{value = 42 : index}> : () -> !emitc.size_t
%4 = builtin.unrealized_conversion_cast %3 : !emitc.size_t to index
%5 = "emitc.constant"() <{value = 1.000000e+00 : f32}> : () -> f32
scf.for %arg1 = %2 to %4 step %2 {
"test.foo"() : () -> ()
%6 = scf.for %arg2 = %2 to %4 step %2 iter_args(%arg3 = %5) -> (f32) {
%7 = emitc.cast %arg3 : f32 to ui32
%8 = emitc.cast %arg3 : f32 to ui32
%9 = emitc.add %7, %8 : (ui32, ui32) -> ui32
%10 = emitc.cast %9 : ui32 to f32
scf.yield %10 : f32
}
"test.bar"() : () -> ()
}
"test.b"() : () -> ()
}
llvm.func @_mlir_ciface_f(%arg0: i1 {test.A}) attributes {test.insert_args = [[0], [1, 0]]} {
llvm.call @f(%arg0) : (i1) -> ()
llvm.return
}
}

```

stack trace:

```
mlir-opt: /data/szy/MLIR/llvm-release/llvm-project/build/tools/mlir/include/mlir/IR/BuiltinAttributes.h.inc:466: Attribute mlir::ArrayAttr::operator[](unsigned int) const: Assertion `idx < size() && "index out of bounds"' failed.
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: /data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt -test-func-insert-arg 21.mlir
#0 0x000055ae2a1e6cc8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0x2023cc8)
#1 0x000055ae2a1e3b61 llvm::sys::RunSignalHandlers() (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0x2020b61)
#2 0x000055ae2a1e7de6 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007f56cb765420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
#4 0x00007f56cada200b raise /build/glibc-LcI20x/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1
#5 0x00007f56cad81859 abort /build/glibc-LcI20x/glibc-2.31/stdlib/abort.c:81:7
#6 0x00007f56cad81729 get_sysdep_segment_value /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:509:8
#7 0x00007f56cad81729 _nl_load_domain /build/glibc-LcI20x/glibc-2.31/intl/loadmsgcat.c:970:34
#8 0x00007f56cad92fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)
#9 0x000055ae2a9a9e88 (anonymous namespace)::TestFuncInsertArg::runOnOperation() TestFunc.cpp:0:0
#10 0x000055ae32b413f2 mlir::detail::OpToOpPassAdaptor::run(mlir::Pass*, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int) (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0xa97e3f2)
#11 0x000055ae32b42234 mlir::detail::OpToOpPassAdaptor::runPipeline(mlir::OpPassManager&, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int, mlir::PassInstrumentor*, mlir::PassInstrumentation::PipelineParentInfo const*) (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0xa97f234)
#12 0x000055ae32b4914a mlir::PassManager::runPasses(mlir::Operation*, mlir::AnalysisManager) (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0xa98614a)
#13 0x000055ae32b48a7f mlir::PassManager::run(mlir::Operation*) (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0xa985a7f)
#14 0x000055ae2a295970 performActions(llvm::raw_ostream&, std::shared_ptr const&, mlir::MLIRContext*, mlir::MlirOptMainConfig const&) MlirOptMain.cpp:0:0
#15 0x000055ae2a294ba6 llvm::LogicalResult llvm::function_ref>, llvm::MemoryBufferRef const&, llvm::raw_ostream&)>::callback_fn>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&)::$_0>(long, std::unique_ptr>, llvm::MemoryBufferRef const&, llvm::raw_ostream&) MlirOptMain.cpp:0:0
#16 0x000055ae32e95795 mlir::splitAndProcessBuffer(std::unique_ptr>, llvm::function_ref>, llvm::MemoryBufferRef const&, llvm::raw_ostream&)>, llvm::raw_ostream&, llvm::StringRef, llvm::StringRef) (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0xacd2795)
#17 0x000055ae2a28bc06 mlir::MlirOptMain(llvm::raw_ostream&, std::unique_ptr>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&) (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0x20c8c06)
#18 0x000055ae2a28bfe5 mlir::MlirOptMain(int, char**, llvm::StringRef, llvm::StringRef, mlir::DialectRegistry&) (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0x20c8fe5)
#19 0x000055ae2a28c345 mlir::MlirOptMain(int, char**, llvm::StringRef, mlir::DialectRegistry&) (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0x20c9345)
#20 0x000055ae2a1cc752 main (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0x2009752)
#21 0x00007f56cad83083 __libc_start_main /build/glibc-LcI20x/glibc-2.31/csu/../csu/libc-start.c:342:3
#22 0x000055ae2a1cc28e _start (/data/szy/MLIR/llvm-release/llvm-project/build/bin/mlir-opt+0x200928e)
Aborted (core dumped)
```

Start with the `mlir-opt -test-func-insert-arg a.mlir` reproducer and inspect the `TestFunc.cpp` implementation identified by the stack trace, especially its ArrayAttr access. Confirm which `test.insert_args` entry causes the out-of-bounds assertion, then add a regression test using the supplied MLIR and verify the pass no longer aborts.

Written by the indexing model from the issue text.