scanDecls() made an incorrect assumption about all declarations having
function names. The compile error for "missing function name" needed to
go into scanDecls().
There was some new code in master branch enumerating all the targets and
a new target was added so we needed to add the glue code.
This commit also introduces some build options to support experimental
LLVM targets.
Also:
* improve the "ambiguous reference" error by swapping the order of
"declared here" and "also declared here" notes.
* improve the "not accessible from inner function" error:
- point out that it has to do with the thing being mutable
- eliminate the incorrect association with it being a function
- note where it crosses a namespace boundary
* struct field types are evaluated in a context that has the struct
namespace visible. Likewise with align expressions, linksection
expressions, enum tag values, and union/enum tag argument
expressions.
Closes#9194Closes#9622
Conflicts:
lib/libcxx/include/__config
d57c0cc3bf added support for DragonFlyBSD
to libc++ by updating some ifdefs. This needed to be synced with llvm13.
* stage2 AstGen: add missing compile error for declaring a local
that shadows a primitive. Even with `@""` syntax, it may not have
the same name as a primitive.
* stage2 AstGen: add a compile error for a global declaration
whose name matches a primitive. However it is allowed when using
`@""` syntax.
* stage1: delete all "declaration shadows primitive" compile errors
because they are now handled by stage2 AstGen.
* stage1/stage2 AstGen: notice when using `@""` syntax and:
- treat `_` as a regular identifier
- skip checking if an identifire is a primitive
Check the new test cases for clarifications on semantics.
closes#6062
* rework `build_options` to integrate with the FileSource abstraction
* support mapping as an arbitrarily named package
* support mapping to multiple different artifacts
* use hash of contents for options filename
Locals are not allowed to shadow declarations, but declarations are
allowed to shadow each other, as long as there are no ambiguous
references.
closes#678
Previous commit shifted everything down in the start.zig file, and
unfortunately our stage2 test harness depends on absolute line
numbers for a couple tests.
We already have a LICENSE file that covers the Zig Standard Library. We
no longer need to remind everyone that the license is MIT in every single
file.
Previously this was introduced to clarify the situation for a fork of
Zig that made Zig's LICENSE file harder to find, and replaced it with
their own license that required annual payments to their company.
However that fork now appears to be dead. So there is no need to
reinforce the copyright notice in every single file.
This is a simple structure containing an array and a length, that can be viewed as a slice.
It is useful to pass-by-copy small data whose exact size is known at runtime, but whose maximum size is known at comptime. This greatly simplifies code that otherwise would require an allocator, or reimplementing what this type does.
The primary purpose of this change is to eliminate one usage of
`usingnamespace` in the standard library - specifically the usage for
errno values in `std.os.linux`.
This is accomplished by truncating the `E` prefix from error values, and
making errno a proper enum.
A similar strategy can be used to eliminate some other `usingnamespace`
sites in the std lib.
This is a backwards-compatible language change.
Previously, `@intToEnum` coerced its integer operand to the integer tag
type of the destination enum type, often requiring the callsite to
additionally wrap the operand in an `@intCast`. Now, the `@intCast` is
implicit, and any integer operand can be passed to `@intToEnum`.
The same as before, it is illegal behavior to pass any integer which does
not have a corresponding enum tag.
* Introduce `memoized_calls` to `Module` which stores all the comptime
function calls that are cached. It is keyed on the `*Fn` and the
comptime arguments, but it does not yet properly detect comptime function
pointers and avoid memoizing in this case. So it will have false
positives for when a comptime function call mutates data through a
pointer parameter.
* Sema: Add a new helper function: `resolveConstMaybeUndefVal`
* Value: add `enumToInt` method and use it in `zirEnumToInt`. It is
also used by the hashing function.
* Value: fix representation of optionals to match error unions.
Previously it would not handle nested optionals correctly. Now it
matches the memory layout of error unions and supports nested
optionals properly. This required changes in all the backends for
generating optional constants.
* TypedValue gains `eql` and `hash` methods.
* Value: Implement hashing for floats, optionals, and enums.
Additionally, the zig type tag is added to the hash, where it was not
previously, so that values of differing types will get different
hashes.
The current version of code uses isARM to check if we are compiling to any arm target then checks the target bit width to either add the 32-bit sources or 64-bit source. However, isARM only returns true for 32-bit targets, and isAARCH64 is for the 64-bit targets.
I also replaced the unreachable with a @panic when we receive an unsupported arch because this code is reachable and should turn into an error.
