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Sema: handle anytype parameter requiring comptime

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Closes #13645
This commit is contained in:
Veikka Tuominen
2022-11-25 02:05:58 +02:00
parent d0dd0bda1c
commit bf62cb453b
2 changed files with 32 additions and 7 deletions
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19
src/Sema.zig
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@@ -7031,16 +7031,21 @@ fn instantiateGenericCall(
}
const arg = uncasted_args[arg_i];
if (is_comptime) {
if (try sema.resolveMaybeUndefVal(arg)) |arg_val| {
const child_arg = try child_sema.addConstant(sema.typeOf(arg), arg_val);
child_sema.inst_map.putAssumeCapacityNoClobber(inst, child_arg);
} else {
return sema.failWithNeededComptime(block, .unneeded, "");
}
const arg_val = (try sema.resolveMaybeUndefVal(arg)).?;
const child_arg = try child_sema.addConstant(sema.typeOf(arg), arg_val);
child_sema.inst_map.putAssumeCapacityNoClobber(inst, child_arg);
} else if (is_anytype) {
const arg_ty = sema.typeOf(arg);
if (try sema.typeRequiresComptime(arg_ty)) {
const arg_val = try sema.resolveConstValue(block, .unneeded, arg, "");
const arg_val = sema.resolveConstValue(block, .unneeded, arg, "") catch |err| switch (err) {
error.NeededSourceLocation => {
const decl = sema.mod.declPtr(block.src_decl);
const arg_src = Module.argSrc(call_src.node_offset.x, sema.gpa, decl, arg_i, bound_arg_src);
_ = try sema.resolveConstValue(block, arg_src, arg, "argument to parameter with comptime-only type must be comptime-known");
return error.AnalysisFail;
},
else => |e| return e,
};
const child_arg = try child_sema.addConstant(arg_ty, arg_val);
child_sema.inst_map.putAssumeCapacityNoClobber(inst, child_arg);
} else {

20
test/cases/compile_errors/anytype_param_requires_comptime.zig Normal file
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@@ -0,0 +1,20 @@
const S = struct {
fn foo(b: u32, c: anytype) void {
const C = struct {
c: @TypeOf(c),
b: u32,
};
bar(C{ .c = c, .b = b });
}
fn bar(_: anytype) void {}
};
pub export fn entry() void {
S.foo(0, u32);
}
// error
// backend=stage2
// target=native
//
// :7:14: error: unable to resolve comptime value
// :7:14: note: argument to parameter with comptime-only type must be comptime-known