Source file src/cmd/cgo/internal/testshared/testdata/gcdata/main/main.go

Documentation: cmd/cgo/internal/testshared/testdata/gcdata/main

     1  // Copyright 2020 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Test that GC data is generated correctly for global
     6  // variables with types defined in a shared library.
     7  // See issue 39927.
     8  
     9  // This test run under GODEBUG=clobberfree=1. The check
    10  // *x[i] == 12345 depends on this debug mode to clobber
    11  // the value if the object is freed prematurely.
    12  
    13  package main
    14  
    15  import (
    16  	"fmt"
    17  	"runtime"
    18  	"testshared/gcdata/p"
    19  )
    20  
    21  var x p.T
    22  
    23  func main() {
    24  	for i := range x {
    25  		x[i] = new(int)
    26  		*x[i] = 12345
    27  	}
    28  	runtime.GC()
    29  	runtime.GC()
    30  	runtime.GC()
    31  	for i := range x {
    32  		if *x[i] != 12345 {
    33  			fmt.Printf("x[%d] == %d, want 12345\n", i, *x[i])
    34  			panic("FAIL")
    35  		}
    36  	}
    37  }
    38  

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