Update to go1.24.0

test/wasmexport2.go

@@ -0,0 +1,92 @@
+// errorcheck
+
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Verify that wasmexport supports allowed types and rejects
+// unallowed types.
+
+//go:build wasm
+
+package p
+
+import (
+	"structs"
+	"unsafe"
+)
+
+//go:wasmexport good1
+func good1(int32, uint32, int64, uint64, float32, float64, unsafe.Pointer) {} // allowed types
+
+type MyInt32 int32
+
+//go:wasmexport good2
+func good2(MyInt32) {} // named type is ok
+
+//go:wasmexport good3
+func good3() int32 { return 0 } // one result is ok
+
+//go:wasmexport good4
+func good4() unsafe.Pointer { return nil } // one result is ok
+
+//go:wasmexport good5
+func good5(string, uintptr) bool { return false } // bool, string, and uintptr are allowed
+
+//go:wasmexport bad1
+func bad1(any) {} // ERROR "go:wasmexport: unsupported parameter type"
+
+//go:wasmexport bad2
+func bad2(func()) {} // ERROR "go:wasmexport: unsupported parameter type"
+
+//go:wasmexport bad3
+func bad3(uint8) {} // ERROR "go:wasmexport: unsupported parameter type"
+
+//go:wasmexport bad4
+func bad4(int) {} // ERROR "go:wasmexport: unsupported parameter type"
+
+// Struct and array types are also not allowed.
+
+type S struct { x, y int32 }
+
+type H struct { _ structs.HostLayout; x, y int32 }
+
+type A = structs.HostLayout
+
+type AH struct { _ A; x, y int32 }
+
+//go:wasmexport bad5
+func bad5(S) {} // ERROR "go:wasmexport: unsupported parameter type"
+
+//go:wasmexport bad6
+func bad6(H) {} // ERROR "go:wasmexport: unsupported parameter type"
+
+//go:wasmexport bad7
+func bad7([4]int32) {} // ERROR "go:wasmexport: unsupported parameter type"
+
+// Pointer types are not allowed, with resitrictions on
+// the element type.
+
+//go:wasmexport good6
+func good6(*int32, *uint8, *bool) {}
+
+//go:wasmexport bad8
+func bad8(*S) {} // ERROR "go:wasmexport: unsupported parameter type" // without HostLayout, not allowed
+
+//go:wasmexport bad9
+func bad9() *S { return nil } // ERROR "go:wasmexport: unsupported result type"
+
+//go:wasmexport good7
+func good7(*H, *AH) {} // pointer to struct with HostLayout is allowed
+
+//go:wasmexport good8
+func good8(*struct{}) {} // pointer to empty struct is allowed
+
+//go:wasmexport good9
+func good9(*[4]int32, *[2]H) {} // pointer to array is allowed, if the element type is okay
+
+//go:wasmexport toomanyresults
+func toomanyresults() (int32, int32) { return 0, 0 } // ERROR "go:wasmexport: too many return values"
+
+//go:wasmexport bad10
+func bad10() string { return "" } // ERROR "go:wasmexport: unsupported result type" // string cannot be a result