This completes the migration from spv.ptrType to self.ptrType.
Unfortunately this requires us to pass a list of types to
constructStruct, which also requires some extra allocations
here and there.
This removes the strategy where union with different active
fields would be generated, and instead simply pointer casts
the active field type where required. This also allows removing
spv.ptrType and using self.ptrType instead, and allows caching
all union types (because there is only the canonical one).
This struct is used to configure the load, such as to make
it volatile. Previously this was done using a single bool, but
this struct makes it shorter to write non-volatile loads (the
usual) and more clear whats going on when a volatile load is
required.
To support self-referential pointers, in the future we will
need to pass the Zig type to any pointer that is created. This
lays some ground work for that by replacing most uses of
spv.ptrType with a new ptrType function that also accepts the
Zig type. This function's contents will soon be replaced by
a version that also supports self-referential pointers.
Also fixed some bugs regarding the use of direct/indirect.
RSA exponents are typically 3 or 65537, and public.
For those, we don't need to use conditional moves on the exponent,
and precomputing a lookup table is not worth it. So, save a few
cpu cycles and some memory for that common case.
For safety, make `powWithEncodedExponent()` constant-time by default,
and introduce a `powWithEncodedPublicExponent()` function for exponents
that are assumed to be public.
With `powWithEncodedPublicExponent()`, short (<= 36 bits) exponents
will take the fast path.
Previous commit caused this error to be printed:
zig build-exe zig Debug aarch64-macos-none: error: memory usage peaked
at 6323765248 bytes, exceeding the declared upper bound of 5200000000
I observed some out-of-memory conditions happening on one of the CI
servers. This should make it avoid scheduling compiler builds at the
same time as other memory-intensive operations.
Currently, Zig uses the oldest Debian release that is still under LTS
for the default version minimum. This is now Debian 10 (Buster), with
long-term support until 2024-06-30.
Debian Buster uses Linux 4.19 and glibc 2.28.
For the default version maximum, Zig uses the newest stable Linux
version, which is currently 6.5.7.
Citations:
* https://www.debian.org/News/2019/20190706
* https://packages.debian.org/source/buster/glibc
* https://kernel.org/
Previous update commit: 1530203c804db7e5abd7d6eac05cfbe449d30aea
This reverts commit 78855bd21866b515018259a2194e036e4b3120df.
This commit did not replace uses of `Type.err_int` of which there are
currently 60 uses.
Re-opens #786
* support 0x prefixed hex code for CLI seed arguments
* don't change the build summary; the printed CLI on build runner
failure is sufficient
* use `std.crypto.random` instead of system time for entropy
