memcheck/tests/error_counts.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <assert.h>
   4 #include "../memcheck.h"
   5 #include "leak.h"
   6
   7 int main(void)
   8 {
   9    int  x;
  10    int  y = 0;
  11    int* reachable __attribute__((unused));
  12    int* dubious;
  13    int* leaked __attribute__((unused));
  14    DECLARE_LEAK_COUNTERS;
  15
  16    /* we require these longs to have same size as a machine word */
  17    assert(sizeof(long) == sizeof(void*));
  18
  19    /* Error counting */
  20    fprintf(stderr, "errors: %d\n\n", VALGRIND_COUNT_ERRORS);
  21
  22    if (x == 0) {
  23       y++;
  24    } else {
  25       y--;
  26    }
  27
  28    fprintf(stderr, "errors: %d\n\n", VALGRIND_COUNT_ERRORS);
  29
  30    // Get a baseline, after start-up and also after printf (because Darwin
  31    // printf allocates memory the first time it's called!)
  32    GET_INITIAL_LEAK_COUNTS;
  33
  34    fprintf(stderr, "errors: %d\n\n", VALGRIND_COUNT_ERRORS);
  35
  36    /* Leak checking */
  37    GET_FINAL_LEAK_COUNTS;
  38    PRINT_LEAK_COUNTS(stderr);
  39    fprintf(stderr, "\n");
  40
  41    fprintf(stderr, "errors: %d\n\n", VALGRIND_COUNT_ERRORS);
  42
  43    leaked = malloc(77);
  44    leaked = 0;
  45
  46    dubious = malloc(88);
  47    dubious += 10;
  48
  49    reachable = malloc(99);
  50
  51    GET_FINAL_LEAK_COUNTS;
  52    PRINT_LEAK_COUNTS(stderr);
  53    fprintf(stderr, "\n");
  54
  55    fprintf(stderr, "errors: %d\n", VALGRIND_COUNT_ERRORS);
  56
  57    return 0;
  58 }