[Xcircuit-dev] xcircuit 2.5.3 bug report

Jeremy H. Brown jhbrown at ai.mit.edu
Sat Mar 23 01:24:10 PST 2002


I figured out a means of reproducing the bug I reported in xcircuit a
week or two back.

1) start xcircuit.
2) 'l' for library.  
3) drag a nand to the center of page 1.
4) create three input wires connecting to the inputs of the NAND gate.
   length doesn't appear to matter.
5) 'T' to add a pin, name it "A", to the left end of the topmost wire
6) 'T' to add a pin "B" to the middle wire
7) select "netlist"->"write spice"
8) middle-button over "B" to select it; reject any wires that might also
   get selected, only select "B".
9) 'c' to copy pin B;  place the copy in the middle of the bottommost wire
   with the middle button
10) select "netlist"->"write spice" --- and the copied "B" vanishes!
    This is the first manifestation of the bug.

for more fun:

11) Copy the nand gate all over the place.  Make some new wires.
12) select "netlist"->"write spice" -- all of the new wires and nand
    gates vanish!

Jeremy

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