File: newdelete_example.cpp

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (41 lines) | stat: -rw-r--r-- 702 bytes parent folder | download | duplicates (23) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
 
void f(int *p);

void testUseMiddleArgAfterDelete(int *p) {
  delete p;
  f(p); // warn: use after free
}

class SomeClass {
public:
  void f();
};

void test() {
  SomeClass *c = new SomeClass;
  delete c;
  c->f(); // warn: use after free
}

void test() {
  int *p = (int *)__builtin_alloca(sizeof(int));
  delete p; // warn: deleting memory allocated by alloca
}

void test() {
  int *p = new int;
  delete p;
  delete p; // warn: attempt to free released
}

void test() {
  int i;
  delete &i; // warn: delete address of local
}

void test() {
  int *p = new int[1];
  delete[] (++p);
    // warn: argument to 'delete[]' is offset by 4 bytes
    // from the start of memory allocated by 'new[]'
}