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Sema: fix generic function instance with comptime return type

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Andrew Kelley 2023-07-13 21:15:13 -07:00
parent 722bd22508
commit 1b70fca534
1 changed files with 12 additions and 0 deletions
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12
src/Sema.zig
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@ -7552,6 +7552,18 @@ fn instantiateGenericCall(
// Make a runtime call to the new function, making sure to omit the comptime args. // Make a runtime call to the new function, making sure to omit the comptime args.
const func_ty = callee.ty.toType(); const func_ty = callee.ty.toType();
const func_ty_info = mod.typeToFunc(func_ty).?; const func_ty_info = mod.typeToFunc(func_ty).?;
// If the call evaluated to a return type that requires comptime, never mind
// our generic instantiation. Instead we need to perform a comptime call.
if (try sema.typeRequiresComptime(func_ty_info.return_type.toType())) {
return error.ComptimeReturn;
}
// Similarly, if the call evaluated to a generic type we need to instead
// call it inline.
if (func_ty_info.is_generic or func_ty_info.cc == .Inline) {
return error.GenericPoison;
}
const runtime_args_len: u32 = func_ty_info.param_types.len; const runtime_args_len: u32 = func_ty_info.param_types.len;
const runtime_args = try sema.arena.alloc(Air.Inst.Ref, runtime_args_len); const runtime_args = try sema.arena.alloc(Air.Inst.Ref, runtime_args_len);
{ {