#2986 Tk crashes when drawing many dashed objects

[Gerhard Reithofer]

When drawing many dashed lines (problably arcs, ...) wish crashes.
Problem found on Linux only.
Error messsage:
X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 55 (X_CreateGC)
Value in failed request: 0x0
Serial number of failed request: 1481
Current serial number in output stream: 1485

Attached example:
Unpack (tar -xzvf view_dxf-8.5-0.3_bugrep.tgz)
./view_dxf-8.5-0.3.tk Scheibenkupplunhshaelfte1.dxf

wish crashes almost all time on Tk 8.5
wish crashes less often on Tk 8.6 (try reloading by double click icon "*" entry in the listbox if no crash)
effect not found on Tk 8.4 or Windows
example requires BWidget.

[Gerhard Reithofer]

Example file to reproduce crash - see description