C compiler incorrectly handles castes on lhs

[Kurt Guntheroth]

Index:	</usr/src/lib/pcc>/<source file> 4.2BSD

Description:
	
	The Vax 4.2 C compiler incorrectly generates a fatal error message
	when castes to a pointer type appear on the lhs of an assignment.
	The SUN C compiler and other c compilers I have tried correctly
	handle this assignment.

	The example below is artificial.  I know there is a way to recode it
	to avoid this bug, but that is not the point.

Repeat-By:
	Compiling the following file        % cc -c test.c
	------------ test.c ---------------
	main()
	{
	    struct foo { int a,b; } ;
	    char * malloc();
	    char * cp;

	    ((struct foo *) cp) = (struct foo *) malloc (sizeof (struct foo));
	}
	--------- end of test.c ------------
	"test.c", line 8: illegal lhs of assignment operator


-- 
Kurt Guntheroth
John Fluke Mfg. Co., Inc.
{uw-beaver,decvax!microsof,ucbvax!lbl-csam,allegra,ssc-vax}!fluke!kurt