Changeset dbb5d4a in git for factory

Timestamp:

Jan 25, 2021, 3:41:13 PM (3 years ago)

Author:

Daniel Schultz <tthsqe12@…>

Branches:

(u'spielwiese', 'fe61d9c35bf7c61f2b6cbf1b56e25e2f08d536cc')

Children:

010a14be02b07fa1ee9a250d9e2251114f166424

Parents:

a4240a2134ce068c6a739e2f0dbc245af4ad8497

git-author:

Daniel Schultz <tthsqe12@gmail.com>2021-01-25 15:41:13+01:00

git-committer:

Hans Schoenemann <hannes@mathematik.uni-kl.de>2021-01-26 11:36:58+01:00

Message:

work around flint bug

File:

• factory/facHensel.cc (modified) (1 diff)

factory/facHensel.cc

@@ -949 +949 @@
     fq_poly_clear(FLINTbuf1, fqctx); //convert expects uninitialized!
     convertFacCF2Fq_poly_t(FLINTbuf1, buf1, fqctx);
-    fq_poly_xgcd_euclidean_f(fcheck, FLINTbuf3, FLINTS, FLINTT,
+
+    // xgcd aliasing bug in <= 2.7.1
+    fq_poly_xgcd_euclidean_f(fcheck, FLINTbuf2, FLINTS, FLINTT,
                                                   FLINTbuf3, FLINTbuf1, fqctx);
+    fq_poly_swap(FLINTbuf3, FLINTbuf2, fqctx);
+
     if (!fq_is_one(fcheck, fqctx))
     {