Strange behaviour, bug in Borland compiler?

[Micah Cowan]

That number is too big for a signed 32 bit int, so it's converted
to unsigned. The test should still work (1 gets promoted to unsigned
1).

As Jack Klein has already pointed out, such is not the case.

Would've caught me too: I forget that decimal literals don't work
the same as octal or hexadecimal.