C compiler test

[Gregory Smith]

In article <2477 at brl-smoke.ARPA> ucsch.pravda at ucb-vax.ARPA writes:
>
>On our VAX 11/750 running 4.2bsd I got the incorrect 3 and 4
>both normal and optimized.
>
>Maybe you see something in this (I'm no assembler wiz)?
:
( Comments mine:)
>L16:	.double	0d2.5e+00
>	.text
>	cvtld	-4(fp),r0 ;	r0 = (double)i
>	divd2	L16,r0	  ;	r0 = r0/2.5  ( double divide )
>	cvtdl	r0,r0	  ;	r0 = (int)r0
>	movl	r0,-4(fp) ;	i = r0
:
>L19:	.double	0d2.5e+00
>	.text
>	cvtdl	L19,r0	  ;	r0 = (int)2.5	( i.e. r=2 )
>	divl2	r0,-4(fp) ;	i=i/r0		( integer divide )

So i /= 2.5 is incorrectly treated as i /= (int)2.5.
( This here VAX running 4.2BSD produces essentially the same code
for both and says 3,3).

-- 
"You'll need more than a Tylenol if you don't tell me where my father is!"
						- The Ice Pirates
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Greg Smith     University of Toronto      UUCP: ..utzoo!utcsri!greg