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Sema: resolve lazy values in resolveMaybeUndefValIntable

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Closes #12512
Closes #12513
This commit is contained in:
Veikka Tuominen 2022-08-22 00:28:08 +03:00
parent b55a5007fa
commit c1afe57d70
2 changed files with 26 additions and 1 deletions
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5
src/Sema.zig
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@ -1698,7 +1698,10 @@ fn resolveMaybeUndefValIntable(
.elem_ptr => check = check.castTag(.elem_ptr).?.data.array_ptr,
.eu_payload_ptr, .opt_payload_ptr => check = check.cast(Value.Payload.PayloadPtr).?.data.container_ptr,
.generic_poison => return error.GenericPoison,
else => return val,
else => {
try sema.resolveLazyValue(block, src, val);
return val;
},
};
}

22
test/behavior/eval.zig
View File

@ -1325,3 +1325,25 @@ test "value in if block is comptime known" {
};
comptime try expect(std.mem.eql(u8, first, second));
}
test "lazy sizeof is resolved in division" {
const A = struct {
a: u32,
};
const a = 2;
try expect(@sizeOf(A) / a == 2);
try expect(@sizeOf(A) - a == 2);
}
test "lazy value is resolved as slice operand" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
const A = struct { a: u32 };
var a: [512]u64 = undefined;
const ptr1 = a[0..@sizeOf(A)];
const ptr2 = @ptrCast([*]u8, &a)[0..@sizeOf(A)];
try expect(@ptrToInt(ptr1) == @ptrToInt(ptr2));
try expect(ptr1.len == ptr2.len);
}