do not increase reference count when assigning entries to vectors/matrices

Author: Jonathan Kliem

cypari2/gen.pyx

@@ -1530,7 +1530,7 @@ cdef class Gen(Gen_base):
                 raise IndexError("column j(=%s) must be between 0 and %s" % (j, self.ncols()-1))
 
             self.cache((i,j), x)
-            xt = x.ref_target()
+            xt = x.fixGEN()
             set_gcoeff(self.g, i+1, j+1, xt)
             return
 
@@ -1554,7 +1554,7 @@ cdef class Gen(Gen_base):
             raise IndexError("index (%s) must be between 0 and %s" % (i, glength(self.g)-1))
 
         self.cache(i, x)
-        xt = x.ref_target()
+        xt = x.fixGEN()
         if typ(self.g) == t_LIST:
             listput(self.g, xt, i+1)
         else:

cypari2/pari_instance.pyx

@@ -1302,7 +1302,7 @@ cdef class Pari(Pari_auto):
                 for j in range(n):
                     sig_check()
                     x = objtogen(entries[k])
-                    set_gcoeff(A.g, i+1, j+1, x.ref_target())
+                    set_gcoeff(A.g, i+1, j+1, x.fixGEN())
                     A.cache((i,j), x)
                     k += 1
         return A
@@ -1318,7 +1318,7 @@ cdef class Pari(Pari_auto):
 
         If the second argument `p` is specified, it must be a prime.
         Then only the local information at `p` is computed and returned.
-        
+
         Examples:
 
         >>> import cypari2