Regression tests reports (to output) differences in the last digit of mantissa:

java ParseDouble
Testing subnormal powers of two.
Exponent -1074, unexpected upper bound converted to 0x0.0000000000002p-1022, not 0x0.0000000000001p-1022.
Exponent -1072, unexpected lower bound converted to 0x0.0000000000003p-1022, not 0x0.0000000000004p-1022.

and so on...

Exponent -1023, unexpected lower bound converted to 0x0.7ffffffffffffp-1022, not 0x0.8p-1022.


according to engineering that is expected and test should be updated/