May all-bits-zero be a trap representation for a pointer? What if I
calloc() space for a structure containing pointers?
-- Richard
--
"Considerat ion shall be given to the need for as many as 32 characters
in some alphabets" - X3.4, 1963.
Jun 22 '07
10  3028 
CBFalconer <cb********@yah oo.comwrites:
Keith Thompson wrote:
>ri*****@cogsci. ed.ac.uk (Richard Tobin) writes:
>>May all-bits-zero be a trap representation for a pointer?
Yes.
>>What if I calloc() space for a structure containing pointers?
Don't do that.
By which Keith means use malloc, not calloc. Then initialize.
Yes, but what Richard is *actually* trying to do (calloc, then
initialize) is ok. calloc will almost certainly properly initialize
all integer members; as long as he doesn't attempt to use the values
of any pointer or floating-point members before assigning values to
them, he should be ok.
I still probably wouldn't use calloc myself, though.
--
Keith Thompson (The_Other_Keit h) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <* <http://users.sdsc.edu/~kst>
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister" This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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