Package: pari
Version: git

I don't know if it affects 2.7 RC1, but I found this on the latest git :

        GP/PARI CALCULATOR Version 2.6.2 (development    16285-92788ef)

          i386 running darwin (x86-64/GMP-5.0.5 kernel) 64-bit version

compiled: Mar 16 2014, Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)

                            threading engine: single

                 (readline v6.2 enabled, extended help enabled)


                     Copyright (C) 2000-2014 The PARI Group


PARI/GP is free software, covered by the GNU General Public License, and comes 

WITHOUT ANY WARRANTY WHATSOEVER.


Type ? for help, \q to quit.

Type ?12 for how to get moral (and possibly technical) support.


parisize = 8000000, primelimit = 500000

(16:55) gp > printf("%1.2f",Mat([1.,2.]))

  ***   at top-level: printf("%1.2f",Mat([

  ***                 ^--------------------

  *** printf: bug in PARI/GP (Segmentation Fault), please report.

  ***   Break loop: type 'break' to go back to GP prompt

break> 

-- 

Pascal