src/regression/flockfile-list.c

   1 // commit: 3e936ce81bbbcc968f576aedbd5203621839f152 2014-09-19
   2 // flockfile linked list handling was broken
   3 #include <errno.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include "test.h"
   8
   9 int main()
  10 {
  11         FILE *f = tmpfile();
  12         FILE *g = tmpfile();
  13         flockfile(g);
  14         flockfile(f);
  15         funlockfile(g);
  16         fclose(g);
  17
  18         /* fill memory */
  19         if (t_vmfill(0,0,0) < 0)
  20                 t_error("vmfill failed: %s\n", strerror(errno));
  21         size_t i,n;
  22         unsigned char *p;
  23         for (n = 1; n < 10000; n++) {
  24                 if (!(p=malloc(n))) break;
  25                 free(p);
  26         }
  27         n--;
  28         if (!(p=malloc(n))) {
  29                 t_error("bad malloc fragmentation\n");
  30                 return t_status;
  31         }
  32         memset(p, 0xff, n);
  33
  34         /* may corrupt memory */
  35         funlockfile(f);
  36         for (i=0; i<n; i++) {
  37                 if (p[i]!=0xff) {
  38                         t_error("p[%zu] = %.2x\n", i, p[i]);
  39                 }
  40         }
  41         return t_status;
  42 }