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ir: Disallow comparison between enum literal and untagged enum

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Closes #4770
This commit is contained in:
LemonBoy
2020-03-21 18:33:54 +01:00
committed by Andrew Kelley
parent beea478acc
commit dc79f181a5
2 changed files with 20 additions and 0 deletions
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11
test/compile_errors.zig
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@@ -14,6 +14,17 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
"tmp.zig:2:15: error: unused variable: 'a'",
});
cases.addTest("comparison of non-tagged union and enum literal",
\\export fn entry() void {
\\ const U = union { A: u32, B: u64 };
\\ var u = U{ .A = 42 };
\\ var ok = u == .A;
\\}
, &[_][]const u8{
"tmp.zig:4:16: error: comparison of union and enum literal is only valid for tagged union types",
"tmp.zig:2:15: note: type U is not a tagged union",
});
cases.addTest("shift on type with non-power-of-two size",
\\export fn entry() void {
\\ const S = struct {