2007-07-05  Michael Snyder  <msnyder@access-company.com>

	* stack.c (print_frame_args): Check return value of lookup_symbol
	(Coverity).

Index: stack.c
===================================================================
RCS file: /cvs/src/src/gdb/stack.c,v
retrieving revision 1.149
diff -p -r1.149 stack.c
*** stack.c	18 Jun 2007 18:28:29 -0000	1.149
--- stack.c	5 Jul 2007 22:57:59 -0000
*************** print_frame_args (struct symbol *func, s
*** 247,252 ****
--- 247,253 ----
  	      struct symbol *nsym;
  	      nsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (sym),
  				    b, VAR_DOMAIN, NULL, NULL);
+ 	      gdb_assert (nsym);
  	      if (SYMBOL_CLASS (nsym) == LOC_REGISTER)
  		{
  		  /* There is a LOC_ARG/LOC_REGISTER pair.  This means