tags 440838 fixed-upstream
thanks.
Hi Paul,
Paul Brook wrote:
> Package: manpages-dev
> Version: 2.62-1
> Severity: normal
> Tags: patch
>
>
> The longjmp(3) function may cause unexpected things to happen to local
> varables modified after the call to setjmp(). I've encountered this
> issue several times, so it seems worthy of a mention in the manpage.
>
> Attached patch adds this, using wording similar to the POSIX spec.
It's a very good idea to add this warning, but the wording really is
a little too close to the (copyrighted) POSIX text. (We can't
really do that!). I rewrote the text somewhat:
The values of automatic variables are unspecified
after a call to longjmp() if they meet all the fol-
lowing criteria:
o they are local to the function that made the
corresponding setjmp() call;
o their values are changed between the calls to
setjmp() and longjmp(); and
o they are not declared as volatile.
Analogous remarks apply for siglongjmp().
This change is applied for 2.65.
Cheers,
Michael
--
Michael Kerrisk
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