llvmorg-github-actions[bot] wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-lldb

Author: Charles Zablit (charles-zablit)

<details>
<summary>Changes</summary>

lldb does not check if the instruction was decoded correctly. This causes an 
assertion failure when starting lldb-dap on Windows with lldb-server.

Requires:
- https://github.com/llvm/llvm-project/pull/208277.

---
Full diff: https://github.com/llvm/llvm-project/pull/208279.diff


1 Files Affected:

- (modified) lldb/source/Plugins/Disassembler/LLVMC/DisassemblerLLVMC.cpp 
(+1-1) 


``````````diff
diff --git a/lldb/source/Plugins/Disassembler/LLVMC/DisassemblerLLVMC.cpp 
b/lldb/source/Plugins/Disassembler/LLVMC/DisassemblerLLVMC.cpp
index a18c95bdbde98..fe59e988e3cd9 100644
--- a/lldb/source/Plugins/Disassembler/LLVMC/DisassemblerLLVMC.cpp
+++ b/lldb/source/Plugins/Disassembler/LLVMC/DisassemblerLLVMC.cpp
@@ -530,7 +530,7 @@ class InstructionLLVMC : public lldb_private::Instruction {
           m_is_valid = mc_disasm_ptr->GetMCInst(opcode_data, opcode_data_len,
                                                 pc, inst, inst_size);
           m_opcode.Clear();
-          if (inst_size != 0) {
+          if (m_is_valid && inst_size != 0) {
             if (arch.GetTriple().isRISCV())
               m_opcode.SetOpcode16_32TupleBytes(opcode_data, inst_size,
                                                 byte_order);

``````````

</details>


https://github.com/llvm/llvm-project/pull/208279
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