github.com/d4l3k/go@v0.0.0-20151015000803-65fc379daeda/misc/cgo/testsanitizers/msan.go (about)

     1  package main
     2  
     3  /*
     4  #cgo CFLAGS: -fsanitize=memory
     5  #cgo LDFLAGS: -fsanitize=memory
     6  
     7  #include <stdint.h>
     8  
     9  void f(int32_t *p, int n) {
    10    int i;
    11  
    12    for (i = 0; i < n; i++) {
    13      p[i] = (int32_t)i;
    14    }
    15  }
    16  */
    17  import "C"
    18  
    19  import (
    20  	"fmt"
    21  	"os"
    22  	"unsafe"
    23  )
    24  
    25  func main() {
    26  	a := make([]int32, 10)
    27  	C.f((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a)))
    28  	for i, v := range a {
    29  		if i != int(v) {
    30  			fmt.Println("bad %d: %v\n", i, a)
    31  			os.Exit(1)
    32  		}
    33  	}
    34  }