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-rw-r--r--tests/trandom.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/tests/trandom.c b/tests/trandom.c
index f59bbae4b..5ff71deee 100644
--- a/tests/trandom.c
+++ b/tests/trandom.c
@@ -122,6 +122,10 @@ test_random2 (long nbtests, mp_prec_t prec, int verbose)
mpfr_random2 (x, 0, 0);
MPFR_ASSERTN(mpfr_cmp_ui (x, 0) == 0 && MPFR_IS_POS(x));
+ /* test size < 0 */
+ mpfr_random2 (x, -1, 0);
+ MPFR_ASSERTN (MPFR_IS_NEG (x) && MPFR_EXP (x) == 0);
+
mpfr_clear (x);
if (!verbose)
{