C Programming: calling free() on error?

Posted by kouei on Stack Overflow See other posts from Stack Overflow or by kouei
Published on 2010-03-20T14:04:35Z Indexed on 2010/03/20 14:11 UTC
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Hi all,

This a follow up on my previous question. link here.

My question is: Let's say I have the following code..

char* buf = (char*) malloc(1024);

...
for(; i<20; i++) { 
    if(read(fd, buf, 1024)   == -1) { // read off a file and store in buffer
         perror("read failed");
         return 1;
    }
    ...

}
free(buf);

what i'm trying to get at is that - what if an error occurs at read()? does that mean my allocated memory never gets freed? If that's the case, how do I handle this? Should I be calling free() as part of error handling?

Once again, I apologize for the bad English. ^^;

Many thanks, K.

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