Re: crash on exit, on OS X

[Ethan A M. <sf...@us...>]

On Wednesday, March 20, 2013 03:25:01 pm Allin Cottrell wrote:
> On Mon, 18 Mar 2013, Allin Cottrell wrote:
> 
> > Sorry if I've missed discussion of this, but I'm seeing a crash on exiting 
> > gnuplot (by typing "quit" or "q" then Enter) when running in Terminal.app on 
> > Mac OS X.
> >
> > This is with current CVS gnuplot, OS X 10.6.8. The message I'm getting is:
> >
> > gnuplot> q
> > gnuplot(19077) malloc: *** error for object 0x71: pointer being freed was not 
> > allocated
> > *** set a breakpoint in malloc_error_break to debug
> > Abort trap
> 
> OK, I now see what's wrong: readline was crossed-up. Gnuplot's 
> configure script found GNU readline under /usr/local but the build 
> linked against Apple's fake readline (libedit.dylib). So bad results 
> may be expected.
> 
> If I either specify --with-readline=bsd or add -L/usr/local/lib to 
> CFLAGS when running configure, I get a consistent build that doesn't 
> crash. I'd forgotten about the fake readline business.
> Allin Cottrell

That's good to know in case someone else runs into the same symptoms.

Note, however, that gnuplot's built-in readline is probably a better option
than the BSD version.  The built-in version was extended during the 4.6
development cycle to include tab-completion.  More to the point, it was 
extended to handle UTF8 encoding, which the BSD version does not support.

	Ethan