Re: doc malloc zero

[Kevin Ryde]

Eric Sunshine <address@hidden> writes:
>
> NextStep/OpenStep realloc() and free() crash when handed a null pointer.

Beaut, in that case:

`free'
     The ISO C99 standard says a call `free(NULL)' does nothing, but
     some old systems don't support this (eg. NextStep).

`malloc'
     The ISO C99 standard says a call `malloc(0)' is implementation
     dependent, it may either return `NULL' (eg. OSF 4) or non-`NULL'
     (eg. GNU C Library).  `AC_FUNC_MALLOC' can be used to insist on
     non-`NULL' (*note Particular Functions::).

`realloc'
     The ISO C99 standard says a call `realloc(NULL,size)' is equivalent
     to a `malloc(size)', but some old systems don't support this (eg.
     NextStep).