issue52635.go

     1  // asmcheck
     2  
     3  // Copyright 2022 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  // Test that optimized range memclr works with pointers to arrays.
     8  
     9  package codegen
    10  
    11  type T struct {
    12  	a *[10]int
    13  	b [10]int
    14  }
    15  
    16  func (t *T) f() {
    17  	// amd64:".*runtime.memclrNoHeapPointers"
    18  	for i := range t.a {
    19  		t.a[i] = 0
    20  	}
    21  
    22  	// amd64:".*runtime.memclrNoHeapPointers"
    23  	for i := range *t.a {
    24  		t.a[i] = 0
    25  	}
    26  
    27  	// amd64:".*runtime.memclrNoHeapPointers"
    28  	for i := range t.a {
    29  		(*t.a)[i] = 0
    30  	}
    31  
    32  	// amd64:".*runtime.memclrNoHeapPointers"
    33  	for i := range *t.a {
    34  		(*t.a)[i] = 0
    35  	}
    36  }
    37
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