issue36723.go

     1  // compile -d=ssa/check/on
     2  
     3  // Copyright 2020 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  // Issue 36723: fail to compile on PPC64 when SSA check is on.
     8  
     9  package p
    10  
    11  import "unsafe"
    12  
    13  type T struct {
    14  	a, b, c, d uint8
    15  	x          [10]int32
    16  }
    17  
    18  func F(p *T, i uintptr) int32 {
    19  	// load p.x[i] using unsafe, derived from runtime.pcdatastart
    20  	_ = *p
    21  	return *(*int32)(add(unsafe.Pointer(&p.d), unsafe.Sizeof(p.d)+i*unsafe.Sizeof(p.x[0])))
    22  }
    23  
    24  func add(p unsafe.Pointer, x uintptr) unsafe.Pointer {
    25  	return unsafe.Pointer(uintptr(p) + x)
    26  }
    27
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