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Old 03-31-2004, 12:58 PM   #1
Disruptor
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Registered: Jul 2003
Location: Hellas - Crete - Heraklion
Distribution: Red Hat 9
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gcc: recursive function quirk


Hi all you folks!! I'ld like to share with you the exotic piece of code following below, that I (accidentally) wrote and tripped uppon:

size_t
Vector_private__sizeofArrayCell (void)
{
Vector_private__sizeofArrayCell ();
}

Gcc doesn't complain. I think it poses an interesting (`academic') topic. Does anyone know whether gcc (3.2.2 here) rightfully:

1. Doesn't complain about the obvious infinite recursion??
and 2. Doesn't compain about the function not having a return statement to return something of `size_t'??

Any ideas/ thoughts??

Cheers,
Disruptor
 
Old 09-22-2014, 01:26 PM   #2
DarrenDrapkin
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Registered: Aug 2014
Distribution: Slackware x86 64 current
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Post GCC is not perfect

Simple - its a bug - isnt it? A bug in gcc. Try it in clang or a proprietry C compiler
 
1 members found this post helpful.
Old 09-22-2014, 01:57 PM   #3
jlinkels
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Registered: Oct 2003
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Now I don't code C every day anymore, but what is wrong with this code?

I am sure gcc doesn't complain about infinite recursion. If that is what you want, fine. Infinite recursion is an execution time property, not a compiler problem.

A return statement is not needed because it is a void function.

jlinkels
 
Old 09-22-2014, 02:01 PM   #4
smallpond
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Registered: Feb 2011
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To be correct it should be:
Code:
size_t
Vector_private__sizeofArrayCell (void)
{
    return Vector_private__sizeofArrayCell ();
}
Now it will return the correct value once forever elapses.
 
Old 09-23-2014, 06:45 AM   #5
brianL
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Registered: Jan 2006
Location: Oldham, Lancs, England
Distribution: Slackware & Slackware64 14.1
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Blog Entries: 52

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Original post is 10 years old.
 
  


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