Interesting .. yet I can see a fairly simple way to restructure this C code, without either of the goto statements .. 

something *
alloc_something(void)
{
  /*  Make two malloc requests. Insure both succeed; return
      allocated memory, if any. Three possible logic paths:
      1. First malloc fails, and we are done.
      2. First malloc succeeds, second malloc fails: free
         the first allocated block, and we are done.
      3. First and second mallocs succeed, and we are done.
  */

  something * ret = malloc(sizeof(something));

  /*  Did the first request succeed?  */

  if (ret != NULL) {

    ret->another_thing = alloc_another_thing();

    /*  Did the second request fail?  */

    if (ret->another_thing == NULL) {

      free(ret);
      ret = NULL;

    }
  }

  return ret;
}

[download]

Alex / talexb / Toronto

Thanks PJ. We owe you so much. Groklaw -- RIP -- 2003 to 2013.

In reply to Re^3: Perl Best Practices - Loop Labels by talexb
in thread Perl Best Practices - Loop Labels by kcott

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