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Note the difference between "is allowed" vs "must". If you write a program that relies on this behaviour you're going to have a hard to track down bug at some

• takeda 10y ago
  That's even stronger case for not relying on errno to catch errors. The code should be something like this: buf = calloc(huge, huge); if (!buf) perror("calloc failed"); printf("calloc(huge, huge) returned: %p\n", buf); free(buf);
  • deleted 10y ago
    [deleted]
  • imron 10y ago
    Yes, my post above was agreeing that you should check the error condition of the return value, rather than relying on errno to be cleared on success.
    • takeda 10y ago
      Ah, my bad.