File: unix_malloc_example.c

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (30 lines) | stat: -rw-r--r-- 507 bytes parent folder | download | duplicates (22) 
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
 

void test() {
  int *p = malloc(1);
  free(p);
  free(p); // warn: attempt to free released memory
}

void test() {
  int *p = malloc(sizeof(int));
  free(p);
  *p = 1; // warn: use after free
}

void test() {
  int *p = malloc(1);
  if (p)
    return; // warn: memory is never released
}

void test() {
  int a[] = { 1 };
  free(a); // warn: argument is not allocated by malloc
}

void test() {
  int *p = malloc(sizeof(char));
  p = p - 1;
  free(p); // warn: argument to free() is offset by -4 bytes
}