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What's the usage of char buf[0] as a structure element?
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Kok How Teh
Apr 10, 2010, 9:48:41 AM4/10/10
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Hi;
I see many "char buf[0];" structure element used in linux kernel
especially in include/net/*.h Could anyone explain what's the use of
this "zero-element" array as an element in a structure? Thanks.
I see many "char buf[0];" structure element used in linux kernel
especially in include/net/*.h Could anyone explain what's the use of
this "zero-element" array as an element in a structure? Thanks.
Regards.
Alexander Bartolich
Apr 10, 2010, 10:05:12 AM4/10/10
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Kok How Teh wrote:
> [...]
> I see many "char buf[0];" structure element used in linux kernel
> especially in include/net/*.h Could anyone explain what's the use of
> this "zero-element" array as an element in a structure? Thanks.
> [...]
> I see many "char buf[0];" structure element used in linux kernel
> especially in include/net/*.h Could anyone explain what's the use of
> this "zero-element" array as an element in a structure? Thanks.
http://c-faq.com/struct/structhack.html
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Eric Sosman
Apr 10, 2010, 10:12:45 AM4/10/10
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This is Question 2.6 in the comp.lang.c Frequently Asked
Questions (FAQ) at <http://www.c-faq.com/>. Your other thread
"dynamic buffer allocation at char buf[1]" is a variation on
the same question.
--
Eric Sosman
eso...@ieee-dot-org.invalid
Seebs
Apr 10, 2010, 1:28:32 PM4/10/10
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It's a pre-C99 version of a flexible array member.
-s
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Copyright 2010, all wrongs reversed. Peter Seebach / usenet...@seebs.net
http://www.seebs.net/log/ <-- lawsuits, religion, and funny pictures
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