Verilator bug in extending $signed

CLOSED: fixed in Verilator GIT 5c39420

The following module should output 4'b1111 but Verilator GIT 14fcfd8 outputs 4'b0001 instead.

module issue_005(y);
  wire [3:0] a;
  output [3:0] y;
  assign a = 4'b0010;
  assign y = $signed(|a);

2014-04-06 Reported as Issue #733
2014-04-08 Fixed in GIT commit 5c39420

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