* Improve and remove duplicate doNotOptimizeAway() implementations
We currently have two doNotOptimizeAway() implementations, one in
std.math and the other one in std.mem.
Maybe we should deprecate one. In the meantime, the std.math one
now just calls the std.mem one.
In a comptime environment, just ignore the value. Previously,
std.mem.doNotOptimizeAway() did not work at comptime.
If the value fits in a CPU register, just tell the compiler we
need that value to be computed, without clobbering anything else.
Only clobber all possibly escaped memory on pointers or large arrays.
Add tests by the way since we didn't had any (we had, but only
indirect ones).
- In #13720, expectEqualBytes was added as a standalone function
- In #13723, expectEqualSlices was made to use expectEqualBytes when the type was u8
- In this commit, expectEqualSlices has fully absorbed expectEqualBytes, and expectEqualBytes itself has been removed
For non-`u8` types, expectEqualSlices will now work similarly to expectEqualBytes (highlighting diffs in red), but will use a full line for each index and therefore will only print a maximum of 16 indexes.
This reverts commit d4adf4420071397d993bac629a9da27b33c67ca3.
Unfortunately, this is not the right place to check if AES functions
are being used at comptime or not.
There are still a few occurrences of "stage1" in the standard library
and self-hosted compiler source, however, these instances need a bit
more careful inspection to ensure no breakage.
This branch largely reverts 58f961f4cb9875bbce3070969438ecf08f392c9f. I
would like to revisit the proposal to modify the standard library in
this way and think more carefully about it before adding isAbsolute()
checks everywhere.
Instead of checking for absolute paths and current working directories
in various file system operations, there is one simple solution: allow
overriding `std.fs.cwd` on WASI.
os.realpath is back to causing a compile error when used on WASI. This
caused a compile error in the Sema handling of `@src()`. The compiler
should never call realpath, so the commit that made this change is
reverted (95ab942184427e7c9b840d71f4d093931e3e48fb). If this breaks
debug info, a different strategy is needed to solve it other than using
realpath.
I also removed the preopens code and replaced it with something much
simpler. There is no longer any global state in the standard library.
Additionally-
* os.openat no longer does an unnecessary fstat on WASI when O.WRONLY
is not provided.
* os.chdir is back to causing a compile error on WASI.
`expectEqualBytes` will now truncate the hexdump of each input to a maximum window of 256 bytes, which makes it safe to use for arbitrarily large inputs. Therefore, it can be used in `expectEqualSlices` when the type is u8.
Fixes a regression introduced in
e35f297aeb993ec956ae80379ddf7f86069e109b.
Now there is test coverage for ArrayList.shrinkAndFree in the case when
resizing fails.
Now it can refuse to resize when it would disturb the metadata tracking
strategy, resulting in smaller code size, a simpler implementation, and
less fragmentation.
