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From: ssnyder@tybalt.caltech.edu (Scott S. Snyder)
Newsgroups: comp.sys.ibm.pc
Subject: YA TC bug
Message-ID: <3662@cit-vax.Caltech.Edu>
Date: Mon, 17-Aug-87 12:20:59 EDT
Article-I.D.: cit-vax.3662
Posted: Mon Aug 17 12:20:59 1987
Date-Received: Tue, 18-Aug-87 04:53:03 EDT
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Reply-To: ssnyder@tybalt.caltech.edu.UUCP (Scott S. Snyder)
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Organization: California Institute of Technology
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TC seems to have a bug with bitfields.

This program:

	foo(z)
	struct {int a; int b:1;} *z;
	{
	  z->a = z->b = 1;
	}

produces the following code when compiled with the large memory model:

_foo	proc	far
	push	bp
	mov	bp,sp

	les	bx,dword ptr [bp+6]
	and	word ptr es:[bx+2],-2
	or	word ptr es:[bx+2],1
	mov	ax,1
	push	es	; NO CORRESPONDING POPs!!!
	push	bx
	les	bx,dword ptr [bp+6]
	mov	word ptr es:[bx],ax
@1:
	pop	bp
	ret	
_foo	endp