diff options
Diffstat (limited to 'test/malloc/testmalloc.c')
-rw-r--r-- | test/malloc/testmalloc.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/test/malloc/testmalloc.c b/test/malloc/testmalloc.c new file mode 100644 index 000000000..158bf4236 --- /dev/null +++ b/test/malloc/testmalloc.c @@ -0,0 +1,98 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + + +struct list { + struct list *next; +}; + +int main(void) +{ + int z=999; + int *y=&z; + int *x=NULL; + struct list *save; + struct list *lp; + int i; + + + printf("pointer to x is %p\n", x); + printf("pointer to y is %p\n", y); + x=malloc(sizeof(int)*2000); + printf("pointer to x is %p\n", x); + y=malloc(sizeof(int)*100); + printf("pointer to y is %p\n", y); + free(x); + free(y); + printf("about to free(0)\n"); + free(0); + + x=malloc(13); + printf("x = %p\n", x); + memcpy(x, "Small string", 13); + printf("0x%p test string1: %s\n", x, (char *)x); + y = realloc(x, 36); + printf("0x%p test string1: %s\n", y, (char *)y); + memcpy(y, "********** Larger string **********", 36); + printf("0x%p test string2: %s\n", y, (char *)y); + free(y); + + + printf("Allocate 100 nodes 500 bytes each\n"); + save = 0; + for (i=0; i<100; i++) { + lp = malloc(500); + if (lp == 0) { + printf("loop 1: malloc returned 0\n"); + goto Failed; + } + lp->next = save; + save = lp; + } + + printf("freeing 100 nodes\n"); + while (save) { + lp = save; + save = save->next; + free(lp); + } + + printf("try realloc 100 times \n"); + lp = 0; + for (i=1; i<=100; i++) { + lp = realloc(lp, i*200); + if (lp == 0) { + printf("loop 3: realloc returned 0\n"); + goto Failed; + } + } + realloc(lp, 0); + + printf("Allocate another 100 nodes 600 bytes each\n"); + save = 0; + for (i=0; i<100; i++) { + lp = malloc(600); + if (lp == 0) { + printf("loop 2: malloc returned 0\n"); + goto Failed; + } + lp->next = save; + save = lp; + } + + printf("freeing 100 nodes\n"); + while (save) { + lp = save; + save = save->next; + free(lp); + } + + + printf("alloc test PASSED\n"); + exit(0); + +Failed: + printf("!!!!!!!!!!!! alloc test FAILED. !!!!!!!!!!!!!!!\n"); + exit(1); +} |