Re: [bug-ncurses] ncurses 6.0 and cur_term function

[Dr. Werner Fink]

On Sun, Sep 20, 2015 at 03:53:01PM -0400, Thomas Dickey wrote:
> On Sun, Sep 20, 2015 at 06:13:03PM +0200, Ondřej Súkup wrote:
> > hello,
> > 
> > why is in ncurses-6.0:
> > 
> > $ readelf -a libncurses.so.6 | grep cur_term
> > 000000228328  006d00000007 R_X86_64_JUMP_SLO 0000000000000000 _nc_cur_term 
> > + 0
> >    109: 0000000000000000     0 FUNC    GLOBAL DEFAULT  UND
> > address@hidden (24)
> > 
> > $ readelf -a libncurses.so.5 | grep cur_term
> >  000000225f70  003900000006 R_X86_64_GLOB_DAT 0000000000000000 cur_term + 0
> >     57: 0000000000000000     0 OBJECT  GLOBAL DEFAULT  UND
> > address@hidden (29)
> 
> Compare with the source code:
> 
> > fgrep -n cur_term *.map
> ncurses.map:879:                cur_term;
> ncursest.map:344:               _nc_cur_term;
> ncursest.map:446:               _nc_get_cur_term;
> ncursest.map:447:               _nc_get_cur_term_sp;
> ncursestw.map:344:              _nc_cur_term;
> ncursestw.map:452:              _nc_get_cur_term;
> ncursestw.map:453:              _nc_get_cur_term_sp;
> ncursesw.map:186:               cur_term;
> 
> For instance, you may be using ncurses 6.0 on OpenSUSE, where they've
> bent the rules a little to make tinfo the same as for the threaded
> (libncursest) library.  There are as usual pros/cons about doing that.
> 
> (I didn't make it easy to do this, but I didn't make it impossible...)

Does this mean I should switch over to use several tinfo libraries, one
for threaded and one for wide+threaded?

On OpenSUSE the libncurses6 is threaded as well as libncursesw6.  IMHO
it makes no sence to use a third library which is none threaded as this
will make users more disoriented.

And what does `bent the rules' mean here? AFAICS and AFAIK the libtinfo
for both libncurses6 (which is threaded) as wel las libncursesw6 are
binary comptible.


Curious

Werner

-- 
  "Having a smoking section in a restaurant is like having
          a peeing section in a swimming pool." -- Edward Burr

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