Hi,
On three different cygwin 1.5.24-2 systems, attached testprogram
(compile with ``gcc -o mall-test mall-test.c'')
returns many lines like:
n1 S13 p12 is 0x81, not 0
n1 S14 p0 is 0x8c, not 0
n1 S14 p1 is 0x7f, not 0
n1 S14 p2 is 0x14, not 0
n1 S14 p3 is 0x61, not 0
n1 S14 p4 is 0x8c, not 0
n1 S14 p5 is 0x7f, not 0
n1 S14 p6 is 0x14, not 0
n1 S14 p7 is 0x61, not 0
n1 S14 p12 is 0x81, not 0
This indicates malloc returning non-zeroed memory.
Has anybody got a clue as to what's going on?
L8r,
Buzz.
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#include <stdio.h>
#include <malloc.h>
int
main () {
int n, s, p, f;
char *m;
for (f = 0, n = 1; n <= 10000 && f <= 200; n++) {
for (s = 1; s < 40; s++) {
m = malloc (s);
if (m == NULL) {
printf ("n%d s%d: Malloc returned NULL.\n", n, s);
} else { // m!= NULL
for (p = 0; p < s; p++) {
if (m[p] != 0) {
f++;
printf ("n%d S%d p%d is 0x%02x, not 0\n", n, s, p, m[p] & 255 );
}
} // for p
free (m);
} // m == NULL
} // for s
} // for n
return f > 0;
}
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