Ambiguity in definition of setjmp/longjmp makes them much less useful

[Henry Spencer]

In article <1990Oct09.143521.24019 at unx.sas.com> sasrer at unx.sas.com (Rodney Radford) writes:
>I believe (just guessing really) that the original C used 'builtins' for the
>setjmp/longjmp functions, ie: they special cased them.

Nope.  The original pdp11 C compiler had a predictable stack-frame format
and could do stack unravelling right.
-- 
Imagine life with OS/360 the standard  | Henry Spencer at U of Toronto Zoology
operating system.  Now think about X.  |  henry at zoo.toronto.edu   utzoo!henry