When BIRD was munmapping too many pages, it sometimes aborted, saying that munmap failed with "Not enough memory" as the address space was getting more and more fragmented. There is a workaround in place, simply keeping that page for future use, yet it has never been compiled in because I somehow forgot to include errno.h. And because I also thought that somebody may have ENOMEM not defined (why?!), there was a check which quietly omitted that workaround. Anyway, ENOMEM is POSIX. It's an utter nonsense to check for its existence. If it doesn't exist, something is broken. |
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sysdep.sgml |