Bug in SgSymbol constructor

	I think I hit a bug inside one of the constructors of the 
SgSymbol class. I have the following code:

	SgSymbol	fn(FUNCTION_NAME);

	When I run the program it core dumps, the following is the stack 
trace for the program:

Core was generated by `enterprise'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libc.so.1.9...done.
Reading symbols from /usr/lib/libdl.so.1.0...done.
#0  0xef77d3c0 in nowalgnd ()
(gdb) where
#0  0xef77d3c0 in nowalgnd ()
#1  0x21738 in newSymbol (code=509, name=0x0, type=0x0) at low_level.c:733
#2  0x1a2dc in SgSymbol::SgSymbol (this=0xeffff5f8, variant=509)
    at libSage++.C:1591
#3  0x28e8 in searchAssetCall (st=0x2633a8, numOfCalls=1, fName=0xeffff680)
    at enterprise.C:123
#4  0x2838 in compile (file=@0x2632a0) at enterprise.C:69
#5  0x2750 in main (argc=2, argv=0xeffff77c) at enterprise.C:36
(gdb) quit

I followed it and it turns out that the function newSymbol() in 
low_level.c is calling strlen() with a NULL pointer, and strlen() doesn't 
like that very much so it goes down in flames.

I could patch it up with an if around it, but I'm not sure if it has been 
fixed yet. Thanks for any suggestion. BTW, I'm using Sage++ v1.3.1


Diego A. Novillo                  | "We each pay a fabulous price for our
diego@cs.ualberta.ca              |  visions of paradise. But a spirit with
Computing Science - U of Alberta  |  a vision is a dream with a mission"
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