Xref: utzoo gnu.gcc:1272 comp.lang.c:25235
Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!rutgers!mcnc!rti!xyzzy!brennan
From: brennan@rtp.dg.com (Dave Brennan)
Newsgroups: gnu.gcc,comp.lang.c
Subject: Need help with gcc constructors
Message-ID: <BRENNAN.90Jan21114618@bach.rtp.dg.com>
Date: 21 Jan 90 16:46:18 GMT
Sender: usenet@xyzzy.UUCP
Followup-To: brennan@rtp.dg.com
Distribution: gnu
Organization: Data General, RTP, NC
Lines: 29


In the following code segment, I don't understand why gcc complains
"invalid lvalue in unary `&'" about the "trash" initilization but has no
problem with the "junk" initialization.  I invoked the compiler 
"gcc -g -c trial.c"   Can somebody enlighten me here?  Thanks.


typedef enum { 
  enum_1,     
  enum_2   
} tag_t;

typedef struct {
  tag_t type;
  char *class_data;
} BAZ_T;

extern int foo();
extern char *bar;

main()
{
  char *junk = (char *) & (BAZ_T) { enum_1, (char *) foo };
  char *trash = (char *) & (BAZ_T) { enum_2, (char *) bar };
}
--
                                                   _________
Dave Brennan, User Interfaces, Data General Corp. /      brennan@dg-rtp.dg.com 
Research Triangle Park, North Carolina, 27709    /  ...mcnc!rti!dg-rtp!brennan
Hm: (919) 460-5725  Wk: (919) 248-6330 _________/ dave_brennan@rpitsmts.bitnet