bug in lint (really - oldfashioned =op)
Bill Stewart
wcs at ho95b.UUCP
Thu Feb 21 14:10:32 AEST 1985
> As of System V, all the old syntax (initializers without "=", the "=+",
> "=-", "=*", etc. operators) has, indeed, disappeared. Anybody out there
> with a S5 compiler care to try some of the guys that cause earlier PCCs to
> drop core?
>
> Guy Harris
> {seismo,ihnp4,allegra}!rlgvax!guy
Unfortunately, the old =- is still with us in System V, sort of:
main(){
int j;
j=5;
j=-1;
}
Under System V, both lint and cc complain that the j=-1 line is
ambiguous, and select the assignment-op. Then they reject it, and
don't produce object code.
Under System V Rel 2, it finally lets you say j=-1; when you mean
j = (-1);
- the lint comment is that the assignment is ambiguous, but the
unary-op is chosen, so it does it right this time.
Bill Stewart
P.S. I didn't remember the old init syntax, so I haven't tried it.
--
Bill Stewart
AT&T Bell Labs, Holmdel NJ 1-201-949-0705
...!ihnp4!ho95b!wcs
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