Due to the `std.crypto.ecdsa.KeyPair.create` taking and optional of seed, even if the seed is generated, cross-compiling to the environments without standard random source (eg. wasm) (`std.crypto.random.bytes`) will fail to compile.
This commit changes the API of the problematic function and moves the random seed generation to a new utility function.
During the LLVM 18 upgrade, two changes were made that changed `@alignOf(u64)` to 4 for the x86-windows target:
- `Type.maxIntAlignment` was made to return 16 for x86 (200e06b). Before that commit, `maxIntAlignment` was 8 for windows/uefi and 4 for everything else
- `Type.intAbiAlignment` was made to return 4 for 33...64 (7e1cba7 + e89d6fc). Before those commits, `intAbiAlignment` would return 8, since the maxIntAlignment for x86-windows was 8 (and for other targets, the `maxIntAlignment` of 4 would clamp the `intAbiAlignment` to 4)
`src/codegen/llvm.zig` has its own alignment calculations that no longer match the values returned from the `Type` functions. For the x86-windows target, this loop:
ddcb7b1c11/src/codegen/llvm.zig (L558-L567)
when the `size` is 64 will set `abi` and `pref` to 64 (meaning an align of 8 bytes), which doesn't match the `Type` alignment of 4.
This commit makes `Type.intAbiAlignment` match the alignment calculated in `codegen/llvm.zig`.
Fixes#20047Fixes#20466Fixes#20469
this fix bypasses the slice bounds, reading garbage data for up to the
last 7 bits (which are technically supposed to be ignored). that's going
to need to be fixed, let's fix that along with switching from byte elems
to usize elems.
* libfuzzer: track unique runs instead of deduplicated runs
- easier for consumers to notice when to recheck the covered bits.
* move common definitions to `std.Build.Fuzz.abi`.
build runner sends all the information needed to fuzzer web interface
client needed in order to display inline coverage information along with
source code.
* libfuzzer: close file after mmap
* fuzzer/main.js: connect with EventSource and debug dump the messages.
currently this prints how many fuzzer runs have been attempted to
console.log.
* extract some `std.debug.Info` logic into `std.debug.Coverage`.
Prepares for consolidation across multiple different executables which
share source files, and makes it possible to send all the
PC/SourceLocation mapping data with 4 memcpy'd arrays.
* std.Build.Fuzz:
- spawn a thread to watch the message queue and signal event
subscribers.
- track coverage map data
- respond to /events URL with EventSource messages on a timer
* std.debug.Dwarf: add `sortCompileUnits` along with a field to track
the state for the purpose of assertions and correct API usage.
This makes batch lookups faster.
- in the future, findCompileUnit should be enhanced to rely on sorted
compile units as well.
* implement `std.debug.Dwarf.resolveSourceLocations` as well as
`std.debug.Info.resolveSourceLocations`. It's still pretty slow, since
it calls getLineNumberInfo for each array element, repeating a lot of
work unnecessarily.
* integrate these APIs with `std.Progress` to understand what is taking
so long.
The output I'm seeing from this tool shows a lot of missing source
locations. In particular, the main area of interest is missing for my
tokenizer fuzzing example.
with debug info resolved.
begin efforts of providing `std.debug.Info`, a cross-platform
abstraction for loading debug information into an in-memory format that
supports queries such as "what is the source location of this virtual
memory address?"
Unlike `std.debug.SelfInfo`, this API does not assume the debug
information in question happens to match the host CPU architecture, OS,
or other target properties.
