Assert failure: !"No IL header; cannot get EH info for function"

[JulieLeeMSFT]

Summary:
jitstress 'Interop' aborts with JIT assert !"No IL header; cannot get EH info for function" in fgFindBasicBlocks.

Failed in (1):

• runtime-coreclr jitstress 20260622.1

Console Log: Console Log
Source: runtime-coreclr jitstress / coreclr windows x86 Checked jitstress2 @ Windows.10.Amd64.Open / Interop

Failed tests:

- coreclr windows arm64 Checked jitstress2 @ Windows.11.Arm64.Open
- coreclr windows x64 Checked jitstress2 @ Windows.10.Amd64.Open
- coreclr windows x86 Checked jitstress2 @ Windows.10.Amd64.Open
  - Interop

Error Message:

05:44:54.597 Running test: _COM_RuntimeAsync_RuntimeAsync::RuntimeAsyncBuiltInCom.TaskReturningPInvokeWithComMarshalling()

Assert failure(PID 3628 [0x00000e2c], Thread: 4636 [0x121c]): !"No IL header; cannot get EH info for function"

CLRJIT! Compiler::fgFindBasicBlocks + 0x174 (0x7129c2e4)
CLRJIT! Compiler::compCompileHelper + 0x512 (0x7127b012)
CLRJIT! Compiler::compCompileAfterInit + 0x7CA (0x7127a24a)
CLRJIT! ``jitNativeCode'::`8'::__Body::Run'::`5'::__Body::Run + 0xAA (0x71276cda)
CLRJIT! `jitNativeCode'::`8'::__Body::Run + 0x5A (0x71276d4a)
CLRJIT! jitNativeCode + 0x213 (0x71280103)
CLRJIT! `Compiler::fgInvokeInlineeCompiler'::`2'::<lambda_1>::operator() + 0x1A7 (0x712b75a7)
CORECLR! CEEInfo::runWithErrorTrap + 0x1DF (0x7321b97f)
CLRJIT! Compiler::eeRunWithErrorTrapImp + 0x25 (0x71287755)
CLRJIT! Compiler::fgInvokeInlineeCompiler + 0x20B (0x712bb81b)
    File: D:\a\_work\1\s\src\coreclr\vm\jitinterface.cpp:13185
    Image: C:\h\w\B75609BF\p\corerun.exe

Exit Code: -1073740286
Expected: 100
Actual: -1073740286

Stack Trace:

N/A

Analysis:
The JIT tried to compile a function with no IL header (EH info) under jitstress.

[JulieLeeMSFT]

cc @dotnet/jit-contrib

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