int main() {
char buf_s[] = "This is data from static storage.",
*buf_d;
printf("%s\n", buf_s);
buf_d = (char *) mallocf(CBUFSIZE);
strcpy(buf_d, "This is data from dynamic storage.");
printf("%s\n", buf_d);
return 0;
}
// test overwritten data with bfreef()
int main() {
static char sarr[SARRSIZ];
char *sarr_ptr = __ptralign(sarr,HSIZE) + HSIZE; // new pointer
char *str = mallocf(STRSIZ);
int i;
strncpy(str, "This is a test.", STRSIZ);
str[STRSIZ-1] = '\0';
strncpy(sarr, "This is data from a static array.", SARRSIZ);
sarr[SARRSIZ-1] = '\0';
printf("str = %s\n", str);
printf("sarr position = %p (%s)\n", sarr,
(unsigned long)sarr%HSIZE ? "unaligned" : "aligned");
printf("sarr = %s\n", sarr);
bfreef(sarr, SARRSIZ);
freef(str);
printf("sarr = %s\n", sarr);
printf("sarr_ptr position = %p\n", sarr_ptr);
printf("sarr =\n");
for (i=0; i<SARRSIZ; ++i)
printf("0x%02x%c", (unsigned char) sarr[i],
(i+1)*5%80 ?' ' : '\n');
while (str != sarr_ptr) // assumption is that sarr size % 16 == 0
str = mallocf(SARRSIZ-HSIZE); // egregious memory leak
printf("found str = sarr_ptr\n");
strncpy(str, "This is data that overwrites static data.",
SARRSIZ-HSIZE);
str[SARRSIZ-HSIZE-1] = '\0';
printf("str = %s\n", str);
printf("sarr =\n");
for (i=0; i<SARRSIZ; ++i)
printf("0x%02x%c", (unsigned char) sarr[i],
(i+1)*5%80 ?' ' : '\n');
freef(str);
return 0;
}
float *zeropaddingex(const float *ptr, size_t length, size_t *newLength,
size_t additionalLength) {
size_t nl = length;
int log = 2;
while (nl >>= 1) {
log++;
}
nl = (1 << log);
*newLength = nl;
float *ret = mallocf(nl + additionalLength);
memcpy(ret, ptr, length * sizeof(float));
memsetf(ret + length, 0.f, nl - length);
return ret;
}