commit 0d8a3ac970291c62b56104172418b3f2ca30927c
Author: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
Date:   Sun Mar 28 13:27:24 2021 +0200

    rnfdisc_factored: remove spurious Q_primpart [#2284]

diff --git a/src/basemath/base2.c b/src/basemath/base2.c
index 7e7d0db9d..c461826f4 100644
--- a/src/basemath/base2.c
+++ b/src/basemath/base2.c
@@ -3582,7 +3582,7 @@ rnfdisc_factored(GEN nf, GEN pol, GEN *pd)
 
   nf = checknf(nf);
   pol = rnfdisc_get_T(nf, pol, &lim);
-  disc = nf_to_scalar_or_basis(nf, nfX_disc(nf, Q_primpart(pol)));
+  disc = nf_to_scalar_or_basis(nf, nfX_disc(nf, pol));
   pol = nfX_to_monic(nf, pol, NULL);
   fa = idealfactor_partial(nf, disc, lim);
   P = gel(fa,1); l = lg(P);
diff --git a/src/test/32/rnf b/src/test/32/rnf
index 1e743f415..c016dce00 100644
--- a/src/test/32/rnf
+++ b/src/test/32/rnf
@@ -853,9 +853,10 @@ error("inconsistent dimensions in idealtwoelt.")
 0
 0
 1
-[[7361, 3786, 318, 5823; 0, 1, 0, 0; 0, 0, 1, 0; 0, 0, 0, 1], [-3, 6, -2, 0]
-~]
-[2, -1]
+[[433, 322, 318, 1318/17; 0, 1, 0, 12/17; 0, 0, 1, 5/17; 0, 0, 0, 1/17], [25
+/17, -12/17, 12/17, 16/17]~]
+[1, -1]
+[[12, 0, 0, 0; 0, 12, 4, 0; 0, 0, 4, 0; 0, 0, 0, 4], [6, 5, -1, 2]~]
   ***   at top-level: rnfdedekind(nf,P,pr2,1)
   ***                 ^-----------------------
   *** rnfdedekind: sorry, Dedekind in the difficult case is not yet implemented.
diff --git a/src/test/in/rnf b/src/test/in/rnf
index 7851ae291..318d5349e 100644
--- a/src/test/in/rnf
+++ b/src/test/in/rnf
@@ -212,6 +212,9 @@ k = nfinit(y^4 + 10*y^2 + 17);
 rnfdisc(k, x^2 - x + 1/Mod(y,k.pol))
 rnfdisc(k, x^2 - x + 1/2)
 
+k = nfinit(y^4 - 10*y^2 + 1);
+rnfdisc(k,x^2-(y^3/2+y^2-5*y/2+1))
+
 \\ ERRORS, keep at end of file
 rnfdedekind(nf, P, pr2, 1)
 rnfdedekind(nf, P)