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#include "nolibc.h" | |
// // Use these to test the real libc. | |
// #include <stdio.h> | |
// #include <stdlib.h> | |
// #include <string.h> | |
// #include <sys/mman.h> | |
static void test_mmap(void) | |
{ | |
const size_t len = 1024; | |
void *p; | |
p = mmap(NULL, len, PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, | |
-1, 0); | |
if (!p) { | |
puts("mmap() error"); | |
return; | |
} | |
munmap(p, len); | |
} | |
static void test_malloc(void) | |
{ | |
void *ptr, *tmp; | |
const size_t len1 = 4096; | |
const size_t len2 = 8192; | |
ptr = malloc(len1); | |
if (!ptr) { | |
puts("malloc() error"); | |
return; | |
} | |
memset(ptr, 'a', len1); | |
tmp = realloc(ptr, len2); | |
if (!tmp) { | |
free(ptr); | |
puts("realloc() error"); | |
return; | |
} | |
ptr = tmp; | |
memset(ptr, 'b', len2); | |
free(ptr); | |
} | |
static void test_calloc(void) | |
{ | |
void *ptr, *tmp; | |
const size_t len1 = 4096; | |
const size_t len2 = 8192; | |
ptr = calloc(sizeof(char), len1); | |
if (!ptr) { | |
puts("malloc() error"); | |
return; | |
} | |
memset(ptr, 'a', len1); | |
tmp = realloc(ptr, len2); | |
if (!tmp) { | |
free(ptr); | |
puts("realloc() error"); | |
return; | |
} | |
ptr = tmp; | |
memset(ptr, 'b', len2); | |
free(ptr); | |
} | |
static void test_string_heap(void) | |
{ | |
static const char str[] = "Hello World!"; | |
char *x; | |
x = strdup(str); | |
if (memcmp(x, str, sizeof(str))) { | |
printf("Wrong strdup()!\n"); | |
return; | |
} | |
free(x); | |
x = strndup(str, 5); | |
if (memcmp(x, str, 4) || x[5] != '\0') { | |
printf("Wrong strndup()!\n"); | |
return; | |
} | |
free(x); | |
} | |
int main(void) | |
{ | |
test_mmap(); | |
test_malloc(); | |
test_calloc(); | |
test_string_heap(); | |
return 0; | |
} |
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