Verilator a985a1f returns 11001 instead of 01001, i.e. verilator
performs sign extension even though the result of { .. } is unsigned.
module issue_038(y); output [4:0] y; assign y = { -4'sd7 }; endmodule
Self-contained test case: test010.v, test010.cc, test010.sh
History:
2014-05-03 Reported as Issue #759
2014-05-03 Fixed in GIT commit 4a58e85