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0fe3fd01dd
The compiler actually doesn't need any functional changes for this: Sema does reification based on the tag indices of `std.builtin.Type` already! So, no zig1.wasm update is necessary. This change is necessary to disallow name clashes between fields and decls on a type, which is a prerequisite of #9938.
20 lines
572 B
Zig
20 lines
572 B
Zig
const expect = @import("std").testing.expect;
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test "error union" {
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var foo: anyerror!i32 = undefined;
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// Coerce from child type of an error union:
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foo = 1234;
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// Coerce from an error set:
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foo = error.SomeError;
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// Use compile-time reflection to access the payload type of an error union:
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try comptime expect(@typeInfo(@TypeOf(foo)).error_union.payload == i32);
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// Use compile-time reflection to access the error set type of an error union:
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try comptime expect(@typeInfo(@TypeOf(foo)).error_union.error_set == anyerror);
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}
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// test
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