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AstGen: fix missing compile error for unreachable @TypeOf argument

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This commit is contained in:
Andrew Kelley 2021-06-28 17:17:26 -07:00
parent 7f5560689a
commit 22b20f20b6
2 changed files with 5 additions and 4 deletions
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4
doc/langref.html.in
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@ -4228,8 +4228,8 @@ test "type of unreachable" {
comptime {
// The type of unreachable is noreturn.
// However this assertion will still fail because
// evaluating unreachable at compile-time is a compile error.
// However this assertion will still fail to compile because
// unreachable expressions are compile errors.
assert(@TypeOf(unreachable) == noreturn);
}

5
src/AstGen.zig
View File

@ -6786,13 +6786,14 @@ fn typeOf(
return gz.astgen.failNode(node, "expected at least 1 argument, found 0", .{});
}
if (params.len == 1) {
const result = try gz.addUnNode(.typeof, try expr(gz, scope, .none, params[0]), node);
const expr_result = try reachableExpr(gz, scope, .none, params[0], node);
const result = try gz.addUnNode(.typeof, expr_result, node);
return rvalue(gz, rl, result, node);
}
const arena = gz.astgen.arena;
var items = try arena.alloc(Zir.Inst.Ref, params.len);
for (params) |param, param_i| {
items[param_i] = try expr(gz, scope, .none, param);
items[param_i] = try reachableExpr(gz, scope, .none, param, node);
}
const result = try gz.addExtendedMultiOp(.typeof_peer, node, items);