* Upgrade from u8 to usize element types.
- WebAssembly assumes u64. It should probably try to be target-aware
instead.
* Move the covered PC bits to after the header so it goes on the same
page with the other rapidly changing memory (the header stats).
depends on the semantics of accepted proposal #19755closes#20994
Before this commit, the name `v9.5a` was being used for two different features, and one was overwriting the other in the `all_features` array.
`arrowlake_s` is an alias for `arrowlake-s`
* 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.
Prints _Static_asserts for the size and alignment of all the basic built-in C
types. The output can be run through a compiler for the specified target to
verify that Zig's values are the same as those used by a C compiler for the
target.
This target triple was weird on multiple levels:
* The `ilp32` ABI is the soft float ABI. This is not the main ABI we want to
support on RISC-V; rather, we want `ilp32d`.
* `gnuilp32` is a bespoke tag that was introduced in Zig. The rest of the world
just uses `gnu` for RISC-V target triples.
* `gnu_ilp32` is already the name of an ILP32 ABI used on AArch64. `gnuilp32` is
too easy to confuse with this.
* We don't use this convention for `riscv64-linux-gnu`.
* Supporting all RISC-V ABIs with this convention will result in combinatorial
explosion; see #20690.
If we're going to abuse the preprocessor, we may as well go all the way and have
it generate a convenient format for us. This achieves two things:
1. We no longer need hacks for the arch-specific syscalls.
2. We now generate the correct syscall names for 32-bit platforms.
The latter is because we now resolve __SC_3264, etc.
* Add -f(no-)sanitize-coverage-trace-pc-guard CLI flag which defaults to
off. This value lowers to TracePCGuard = true (LLVM backend) and -Xclang
-fsanitize-coverage-trace-pc-guard. These settings are not
automatically included with -ffuzz.
* Add `Build.Step.Compile` flag for sanitize_coverage_trace_pc_guard
with appropriate documentation.
* Add `zig cc` integration for the respective flags.
* Avoid crashing in ELF linker code when -ffuzz -femit-llvm-ir used
together.
