Re: [9fans] memory woes

[sretzki@gmx.de]

> you are forgetting +1 for the null.  you need strlen("Hello World")+1.

Heh! Yeah, true. But then the strcpy() would write into non-allocated area, so why does the free()-call make it crash?

>
> - erik
>
>> #include <u.h>
>> #include <libc.h>
>>
>>
>> void main(int argc, char **argv) {
>> 	int i;
>> 	char *m00;
>>
>> 	for(i=0; i<=5; i++) {
>> 		if((m00 = malloc(strlen("Hello World"))) == nil) {
>> 			print("drama! [%d]\n",i);
>> 			exits("malloc");
>> 		}
>> 		strcpy(m00,"Hello World");
>> 		print("%d> %s\n",i,m00);
>> 		free(m00);
>> 	}
>> 	exits(nil);
>> }