Obscure bug in cc??

[Wm. Scott `Spot' Draves]

I can't explain this behavior with the man pages, can anyone duplicate it?
It seems to be a bug in cc that only occurs when

1) compiling -g
2) linking -n
3) source file is named .i
4) there are no functions in the source file.

This is a sun4/330 running 4.0.3

-rwxr-xr-x  1 root     staff       98304 Jul 12  1989 /usr/bin/cc*

Here's the transcript

% cd /tmp
/tmp 
% mkdir test
% cd test
/tmp/test 
% ls
% echo 'main(){}' > main.c
% echo 'int i;' > foo.i
% cat main.c
main(){}
% cat foo.i
int i;
% cc -g -c main.c
% cc -g -c foo.i
% cc main.o foo.o
% cc -n main.o foo.o
Undefined:
LL0
% nm foo.o
         U LL0
00000004 C _i
% cc -c foo.i
% cc -n main.o foo.o
% mv foo.i foo.c
% cc -g -c foo.c
% cc -n main.o foo.o
% mv foo.c foo.i
% cc -g -c foo.i
% cc -n main.o foo.o
Undefined:
LL0
% nm foo.o
         U LL0
00000004 C _i
% nm main.o
00000000 T _main
% cc -n -g main.o foo.o
Undefined:
LL0
% echo 'foo(){}' > foo.i
% cc -g -c foo.i
% nm foo.o
00000000 T _foo
% 

Here's how foo.s looks when generated from foo.i:
% cat foo.s
	.stabs	"/tmp/test/",0144,0,0,LL0
	.seg	"data"
	.stabs	"int:t(0,0)=r(0,0);-2147483648;2147483647;",0x80,0,0,0
	.stabs	"char:t(0,1)=r(0,1);0;127;",0x80,0,0,0
<more>

and from foo.c:
% cat foo.s
	.stabs	"/tmp/test/",0144,0,0,LL0
	.stabs	"foo.c",0144,0,0,LL0
LL0:
	.seg	"data"
	.stabs	"int:t(0,1)=r(0,1);-2147483648;2147483647;",0x80,0,0,0
	.stabs	"char:t(0,2)=r(0,2);0;127;",0x80,0,0,0
<more>

It's missing exactly two lines.

Scott Draves		Space... The Final Frontier
wsd at cs.brown.edu
uunet!brunix!wsd