On Tue, 14 May 1996, Taras Ivanenko wrote:

> 	asm("movel %0, a0
> 	movel %1, a1
> 	jsr _some_external_function:
> 	: "=g"(A), "=g"(C) );

You should specify any registers used in the assembly code like so:

	asm("..." : "=g" (A), "=g" (C) : : "a0");

> int
> mrg_NewPtr()
> {
> 	int result = noErr;
> 	u_int numbytes;
> 	u_int32_t trapword;
> 	caddr_t ptr;
> 
> 	asm("	movl	d1, %0
> 		movl	d0, %1"
> !		: "=g" (trapword), "=g" (numbytes)
> +	    :: "d0", "d1");

Without the added "bashed registers" that you apparently added here, this
code can fail as you describe.