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std.hash_map: workaround for circular dependency

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See #11367

It's debatable whether this ends up being a legitimate compile error or
whether the lang spec allows this test case. For now this workaround
seems very reasonable; delaying comptime execution of `verifyContext`
until the struct is instantiated.
This commit is contained in:
Andrew Kelley 2022-03-31 19:05:24 -07:00
parent 26253acf1d
commit b45c6c757c
1 changed files with 8 additions and 3 deletions
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11
lib/std/hash_map.zig
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@ -370,12 +370,15 @@ pub fn HashMap(
comptime Context: type,
comptime max_load_percentage: u64,
) type {
comptime verifyContext(Context, K, K, u64, false);
return struct {
unmanaged: Unmanaged,
allocator: Allocator,
ctx: Context,
comptime {
verifyContext(Context, K, K, u64, false);
}
/// The type of the unmanaged hash map underlying this wrapper
pub const Unmanaged = HashMapUnmanaged(K, V, Context, max_load_percentage);
/// An entry, containing pointers to a key and value stored in the map
@ -694,11 +697,13 @@ pub fn HashMapUnmanaged(
) type {
if (max_load_percentage <= 0 or max_load_percentage >= 100)
@compileError("max_load_percentage must be between 0 and 100.");
comptime verifyContext(Context, K, K, u64, false);
return struct {
const Self = @This();
comptime {
verifyContext(Context, K, K, u64, false);
}
// This is actually a midway pointer to the single buffer containing
// a `Header` field, the `Metadata`s and `Entry`s.
// At `-@sizeOf(Header)` is the Header field.