lsan3.go

     1  // Copyright 2025 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  package main
     6  
     7  /*
     8  #include <stdlib.h>
     9  
    10  int* test() {
    11     return malloc(sizeof(int));
    12  }
    13  
    14  void clearStack(int n) {
    15    if (n > 0) {
    16      clearStack(n - 1);
    17    }
    18  }
    19  
    20  */
    21  import "C"
    22  
    23  type S struct {
    24  	p *C.int
    25  }
    26  
    27  var p *S
    28  
    29  //go:noinline
    30  func F() {
    31  	p = &S{p: C.test()}
    32  }
    33  
    34  func clearStack(n int) {
    35  	if n > 0 {
    36  		clearStack(n - 1)
    37  	}
    38  }
    39  
    40  func main() {
    41  	// Test should pass: memory allocated by C does not leak
    42  	// because a Go global variable points to it.
    43  	F()
    44  	clearStack(100)
    45  	C.clearStack(100)
    46  }
    47
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