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AstGen: disallow alignment on function types

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A pointer type already has an alignment, so this information does not
need to be duplicated on the function type.  This already has precedence
with addrspace which is already disallowed on function types for this
reason.  Also fixes `@TypeOf(&func)` to have the correct addrspace and
alignment.
This commit is contained in:
Jacob Young
2024-03-16 16:46:45 +01:00
parent f88a971e4f
commit d10c52c194
30 changed files with 259 additions and 312 deletions
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28
test/cases/compile_errors/function_ptr_alignment.zig
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@@ -1,28 +1,16 @@
comptime {
var a: *align(2) @TypeOf(foo) = undefined;
_ = &a;
}
fn foo() void {}
fn align1() align(1) void {}
fn align2() align(2) void {}
comptime {
var a: *align(1) fn () void = undefined;
_ = &a;
}
comptime {
var a: *align(2) fn () align(2) void = undefined;
_ = &a;
}
comptime {
var a: *align(2) fn () void = undefined;
_ = &a;
}
comptime {
var a: *align(1) fn () align(2) void = undefined;
_ = &a;
_ = @as(*align(1) const fn () void, &align2);
_ = @as(*align(1) const fn () void, &align1);
_ = @as(*align(2) const fn () void, &align2);
_ = @as(*align(2) const fn () void, &align1);
}
// error
// backend=stage2
// target=native
//
// :20:19: error: function pointer alignment disagrees with function alignment
// :8:41: error: expected type '*align(2) const fn () void', found '*const fn () void'
// :8:41: note: pointer alignment '1' cannot cast into pointer alignment '2'