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-rw-r--r--mysql-test/t/type_float.test11
1 files changed, 10 insertions, 1 deletions
diff --git a/mysql-test/t/type_float.test b/mysql-test/t/type_float.test
index 75723d2a0ff..8a484f7bcd0 100644
--- a/mysql-test/t/type_float.test
+++ b/mysql-test/t/type_float.test
@@ -179,4 +179,13 @@ show warnings;
desc t3;
drop table t1,t2,t3;
-# End of 4.1 tests
+#
+# Bug #22129: A small double precision number becomes zero
+#
+# check if underflows are detected correctly
+select 1e-308, 1.00000001e-300, 100000000e-300;
+
+# check if overflows are detected correctly
+select 10e307;
+
+--echo End of 4.1 tests