Add appropriate assertions to the operations in Uintp. Most operations disallow No_Uint. Division disallows Uint_0 on the right, and so on.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* uintp.ads, uintp.adb: Add assertions.
(Ubool, Opt_Ubool): New "boolean" subtypes.
(UI_Is_In_Int_Range): The parameter should probably be
Valid_Uint, but we don't change that for now, because it causes
failures in gigi.
* sem_util.ads, sem_util.adb (Is_True, Is_False,
Static_Boolean): Use Opt_Ubool subtype. Document the fact that
Is_True (No_Uint) = True. Implement Is_False in terms of
Is_True. We considered changing Static_Boolean to return Uint_1
in case of error, but that doesn't fit in well with
Static_Integer.
(Has_Compatible_Alignment_Internal): Deal with cases where Offs
is No_Uint. Change one "and" to "and then" to ensure we don't
pass No_Uint to ">", which would violate the new assertions.
* exp_util.adb, freeze.adb, sem_ch13.adb: Avoid violating new
assertions in Uintp.
patch.diff.gz
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