Re: Emacs 22.2.90 pretest

[Eli Zaretskii]

> Date: Thu, 21 Aug 2008 09:51:33 +0900
> From: YAMAMOTO Mitsuharu <address@hidden>
> Cc: address@hidden
> 
> > Please suggest which variables to GCPRO.
> 
> GCPRO doesn't help here.  It just protects Lisp Objects from being
> collected, but not for Lisp String contents from being relocated.

Really? that's news to me.  So what means do we have for protecting
pointers to Lisp strings from GC?

> Yes, `nm' is not corrupted if DOS_NT because of copying.  But
> otherwise, it may be corrupted by GC and it is actually used
> afterwards.
> 
>   1455          if (1
>   1456        #ifndef DOS_NT
>   1457              /* /... alone is not absolute on DOS and Windows. */
>   1458              && !IS_DIRECTORY_SEP (nm[0])
>   1459        #endif

Is nm the only variable in danger?  If so, how about if we simply copy
it on all platforms?