[lwip-devel] [bug #20478] memp_malloc returns bogus value on malloc failure

[Jared Grubb]

Update of bug #20478 (project lwip):

                Severity:              3 - Normal => 4 - Important          
                  Status:                    None => Confirmed              
         Planned Release:                         => 1.3.0                  

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Follow-up Comment #1:

It returns NULL as long as MEMP_SIZE==0. But the return adds MEMP_SIZE to
NULL and that is a bug. We can't add the "return NULL;" where you have it,
because then SYS_ARCH_UNPROTECT doesn't happen.

  /* Need to check for NULL in case MEMP_SIZE>0 */
  return (memp ? ((void*)((u8_t*)memp + MEMP_SIZE)) : NULL);
}


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