This is all of the expected 0.14.0 progress on #21530, which can now be
postponed once this commit is merged.
This required rewriting the (un)wrap operations since the original
implementations were extremely buggy.
Also adds an easy way to retrigger Sema OPV bugs so that I don't have to
keep updating #22419 all the time.
This instruction is like `intcast`, but includes two safety checks:
* Checks that the int is in range of the destination type
* If the destination type is an exhaustive enum, checks that the int
is a named enum value
This instruction is locked behind the `safety_checked_instructions`
backend feature; if unsupported, Sema will emit a fallback, as with
other safety-checked instructions.
This instruction is used to add a missing safety check for `@enumFromInt`
truncating bits. This check also has a fallback for backends which do
not yet support `safety_checked_instructions`.
Resolves: #21946
The compiler actually doesn't need any functional changes for this: Sema
does reification based on the tag indices of `std.builtin.Type` already!
So, no zig1.wasm update is necessary.
This change is necessary to disallow name clashes between fields and
decls on a type, which is a prerequisite of #9938.
When the slice-by-length start position is runtime-known, it is likely
protected by a runtime-known condition and therefore a compile error is
less appropriate than a runtime panic check.
This is demonstrated in the json code that was updated and then reverted
in this commit.
When #3806 is implemented, this decision can be reassessed.
Revert "std: work around compiler unable to evaluate condition at compile time"
Revert "frontend: comptime array slice-by-length OOB detection"
This reverts commit 7741aca96c8cc6df7e8c4bd10ada741d6a3ffb9d.
This reverts commit 2583b389eaf5f7aaa0eb79b51126506c1e172d15.
This reverts commit d9d840a33ac8abb0e616de862f592821a7f4a35e, reversing
changes made to a04d4330945565b8d6f298ace993f6954c42d0f3.
This is not an adequate implementation of the missing safety check, as
evidenced by the changes to std.json that are reverted in this commit.
Reopens#18382Closes#18510
Most of this migration was performed automatically with `zig fmt`. There
were a few exceptions which I had to manually fix:
* `@alignCast` and `@addrSpaceCast` cannot be automatically rewritten
* `@truncate`'s fixup is incorrect for vectors
* Test cases are not formatted, and their error locations change
Piggybacking on 40f8f0134f5da9baaefd0fdab529d5585fa46199, remainder
division, modulus, and `%` syntax no longer emit safety checks for a
comptime-known denominator.
