Extern functions were missing attributes such as "readonly" on
non-optional pointers, and "byval" which is required to match C ABI.
Follow-up from bf28765a975355c27558eaa86cf00ccb29b663a7.
closes#12683
This is problematic because in practice it depends on whether the
compiler backend supports it too, as evidenced by the TODO comment about
LLVM not supporting some architectures that in fact do support tail
calls.
Instead this logic is organized strategically in src/target.zig, part of
the internal compiler source code, and the behavior tests in question
duplicate some logic for deciding whether to proceed with the test.
The proper place to expose this flag is in `@import("builtin")` - the
generated source file - so that third party compilers can advertise
whether they support tail calls.
Given that COFF will want to support PIC from ground-up, there is no
point in leaving outdated code for COFF in other backends such as
arm or aarch64. Instead, when we are ready to look into those, we
can start figuring out what to add and where.
This is not technically correct, but given that we are not yet able
to link against the CRT, it's a good default until then.
Add basic logging of generated symbol table in the linker.
Regardless of the build mode (build-exe, build-lib), always
set the default stack size to 1MB. Previously, this was only
done when using build-exe, making the inconsistancy confusing.
The user can still override this behavior by providing the
`--stack <size>` flag.
Adds a `unused: u32 = 0` field to `Zir.Header`.
We could leave this as padding, however it triggers a Valgrind warning because
we read and write undefined bytes to the file system. This is harmless, but
it's essentially free to have a zero field here and makes the warning go away,
making it more likely that following Valgrind warnings will be taken seriously.
Adds error for taking a non comptime parameter in a function returning a
comptime-only type but not when that type is dependent on a parameter.
Co-authored-by: Veikka Tuominen <git@vexu.eu>
According to https://github.com/WebAssembly/tool-conventions/blob/main/BasicCABI.md
the size of c's long double is 16 bytes for Wasm, rather than 8 bytes
which was the value previously in the compiler. This ensures
we not only pass the correct value, but also creates the correct
function signature needed to pass the Wasm validator.
This also adds an additional test case in c_abi tests.
From `copy_file_range(2)` errors:
ETXTBSY
Either fd_in or fd_out refers to an active swap file.
Same error will be used in the upcoming `ioctl_ficlonerange(2)`:
ETXTBSY
One of the files is a swap file. Swap files cannot share storage.
We call `sema.resolveTypeFields` in order to get the fields of structs
and unions inserted into their data structures. If it isn't called, it
can happen that the fields of a type is queried before those fields are
inserted into (for instance) `Module.Union.fields`, which would result in
a wrong 'no field named' error.
Fixes: #12486
A self-defined macro is one of the form `#define FOO FOO`
Those types of macros have never been translated; this change will cause
any macros which refer to them to be translated as `@compileError` instead
of referring to a non-existent identifier.
Closes#12471
