Segmentation Fault in iwasm for struct.get with v128 field

[akldc]

Test case

(module
  (type $S (struct (field (mut v128))))
  (type $ft0 (func (result v128)))
  (export "main" (func 0))
  (func $0
    (type $ft0)
    (struct.new_default $S)
    (struct.get $S 0)
  )
)

Describe the bug
When running the module with iwasm, the runtime crashes with a segmentation fault instead of returning the expected v128 zero value. The execution terminates with:

$ iwasm -f main test1.wasm
unhandled SIGSEGV, si_addr: (nil)
Aborted

$ iwasm --llvm-jit -f main test1.wasm
unhandled SIGSEGV, si_addr: (nil)
Aborted

Other runtimes such as wasmtime and WasmEdge execute the same module correctly and return a v128 value of 0. This suggests a possible bug in iwasm when handling struct.get on a struct field of type v128.

Version
iwasm 2.4.4
ubuntu 20.04

To Reproduce
Steps to reproduce the behavior:

1. Compile iwasm with flags like '-DWAMR_BUILD_JIT=1 -DWAMR_BUILD_TAIL_CALL=1 -DWAMR_BUILD_GC=1'
2. Run iwasm with CLI options like 'iwasm -f main test1.wasm'
3. See error

Expected behavior
0

Actual Result
unhandled SIGSEGV, si_addr: (nil)
Aborted

Desktop (please complete the following information):

• Arch x86_64
• OS ubuntu 20.04