6 /* My own versions of malloc, realloc and free. Because I want malloc and
7 * realloc to bomb out and exit the program if they run out of memory,
8 * realloc to reliably call malloc if passed a NULL pointer, and free
9 * to reliably do nothing if passed a NULL pointer. Of course we can also
10 * put trace printouts in, if we need to. */
13 static FILE *fp = NULL;
15 void mlog(char *file, int line) {
17 fp = fopen("putty_mem.log", "w");
18 setvbuf(fp, NULL, _IONBF, BUFSIZ);
21 fprintf (fp, "%s:%d: ", file, line);
25 void *safemalloc(size_t size) {
26 void *p = malloc (size);
28 MessageBox(NULL, "Out of memory!", "PuTTY Fatal Error",
29 MB_SYSTEMMODAL | MB_ICONERROR | MB_OK);
34 fprintf(fp, "malloc(%d) returns %p\n", size, p);
39 void *saferealloc(void *ptr, size_t size) {
44 p = realloc (ptr, size);
46 MessageBox(NULL, "Out of memory!", "PuTTY Fatal Error",
47 MB_SYSTEMMODAL | MB_ICONERROR | MB_OK);
52 fprintf(fp, "realloc(%p,%d) returns %p\n", ptr, size, p);
57 void safefree(void *ptr) {
61 fprintf(fp, "free(%p)\n", ptr);
67 fprintf(fp, "freeing null pointer - no action taken\n");