================
@@ -1978,7 +1978,12 @@ llvm::Expected<Value> DWARFExpression::Evaluate(
// grows to the nearest host integer type.
llvm::APInt fail_value(1, 0, false);
llvm::APInt ap_int = scalar.UInt128(fail_value);
- assert(ap_int.getBitWidth() >= bit_size);
+ // We have seen a case where we have expression like:
+ // DW_OP_lit0, DW_OP_stack_value, DW_OP_piece 0x28
+ // here we are assuming the compiler was trying to zero
+ // extend the value that we should append to the buffer.
+ if (ap_int.getBitWidth() < bit_size)
+ ap_int = ap_int.zext(bit_size);
llvm::ArrayRef<uint64_t> buf{ap_int.getRawData(),
ap_int.getNumWords()};
curr_piece.GetScalar() = Scalar(llvm::APInt(bit_size, buf));
----------------
labath wrote:
I don't know, but I'm not particularly worried by that given that the only
other call of this function is also inside DWARFExpression (in DW_OP_convert).
If that becomes an issue, we can both cases together.
https://github.com/llvm/llvm-project/pull/150149
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