bad_internal_offsets.go

     1  // compile
     2  
     3  //go:build !wasm
     4  // +build !wasm
     5  
     6  // Copyright 2021 The Go Authors. All rights reserved.
     7  // Use of this source code is governed by a BSD-style
     8  // license that can be found in the LICENSE file.
     9  
    10  package genChecker0
    11  
    12  var FailCount int
    13  
    14  //go:noinline
    15  func NoteFailure(fidx int, pkg string, pref string, parmNo int, _ uint64) {
    16  	FailCount += 1
    17  	if FailCount > 10 {
    18  		panic("bad")
    19  	}
    20  }
    21  
    22  //go:noinline
    23  func NoteFailureElem(fidx int, pkg string, pref string, parmNo int, elem int, _ uint64) {
    24  	FailCount += 1
    25  	if FailCount > 10 {
    26  		panic("bad")
    27  	}
    28  }
    29  
    30  type StructF0S0 struct {
    31  	F0 int16
    32  	F1 string
    33  	F2 StructF0S1
    34  }
    35  
    36  type StructF0S1 struct {
    37  	_ uint16
    38  }
    39  
    40  // 0 returns 3 params
    41  //go:registerparams
    42  //go:noinline
    43  func Test0(p0 uint32, p1 StructF0S0, p2 int32) {
    44  	// consume some stack space, so as to trigger morestack
    45  	var pad [256]uint64
    46  	pad[FailCount]++
    47  	if p0 == 0 {
    48  		return
    49  	}
    50  	p1f0c := int16(-3096)
    51  	if p1.F0 != p1f0c {
    52  		NoteFailureElem(0, "genChecker0", "parm", 1, 0, pad[0])
    53  		return
    54  	}
    55  	p1f1c := "f6ꂅ8ˋ<"
    56  	if p1.F1 != p1f1c {
    57  		NoteFailureElem(0, "genChecker0", "parm", 1, 1, pad[0])
    58  		return
    59  	}
    60  	p1f2c := StructF0S1{}
    61  	if p1.F2 != p1f2c {
    62  		NoteFailureElem(0, "genChecker0", "parm", 1, 2, pad[0])
    63  		return
    64  	}
    65  	p2f0c := int32(496713155)
    66  	if p2 != p2f0c {
    67  		NoteFailureElem(0, "genChecker0", "parm", 2, 0, pad[0])
    68  		return
    69  	}
    70  	// recursive call
    71  	Test0(p0-1, p1, p2)
    72  	return
    73  	// 0 addr-taken params, 0 addr-taken returns
    74  }
    75
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