Update to go1.24.0

test/fixedbugs/notinheap.go

@@ -4,12 +4,15 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Test type-checking errors for go:notinheap.
+// Test type-checking errors for not-in-heap types.
+
+//go:build cgo
 
 package p
 
-//go:notinheap
-type nih struct{}
+import "runtime/cgo"
+
+type nih struct{ _ cgo.Incomplete }
 
 type embed4 map[nih]int // ERROR "incomplete \(or unallocatable\) map key not allowed"
 
@@ -27,25 +30,8 @@ type okay4 interface {
 	f(x nih) nih
 }
 
-// Type conversions don't let you sneak past notinheap.
-
-type t1 struct{ x int }
-
-//go:notinheap
-type t2 t1
-
-//go:notinheap
-type t3 byte
-
-//go:notinheap
-type t4 rune
-
-var sink interface{}
-
-func i() {
-	sink = new(t1)                     // no error
-	sink = (*t2)(new(t1))              // ERROR "cannot convert(.|\n)*t2 is incomplete \(or unallocatable\)"
-	sink = (*t2)(new(struct{ x int })) // ERROR "cannot convert(.|\n)*t2 is incomplete \(or unallocatable\)"
-	sink = []t3("foo")                 // ERROR "cannot convert(.|\n)*t3 is incomplete \(or unallocatable\)"
-	sink = []t4("bar")                 // ERROR "cannot convert(.|\n)*t4 is incomplete \(or unallocatable\)"
+func f() {
+	type embed7 map[nih]int // ERROR "incomplete \(or unallocatable\) map key not allowed"
+	type embed8 map[int]nih // ERROR "incomplete \(or unallocatable\) map value not allowed"
+	type emebd9 chan nih    // ERROR "chan of incomplete \(or unallocatable\) type not allowed"
 }