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What's the meaning of (void) cast?

The following function is quoted from Judy source code:

//
************************************************** **************************
// J U D Y F R E E

void JudyFree(
void * PWord,
Word_t Words)
{
(void) Words;
free(PWord);

} // JudyFree()
Obviously, this is a wrapper routine to free memory. However, what's
the purpose of (void)Words ?
Also, learned from the calling codes, I think the second parameter is
the size of memory pointed by the first parameter.

Thanks

---
zf

Jan 7 '08 #1
1 4225
alex wrote:
The following function is quoted from Judy source code:

//
************************************************** **************************
// J U D Y F R E E

void JudyFree(
void * PWord,
Word_t Words)
{
(void) Words;
free(PWord);

} // JudyFree()
Obviously, this is a wrapper routine to free memory. However, what's
the purpose of (void)Words ?
It's probably there to suppress unused parameter warnings from some
compilers.

--
Ian Collins.
Jan 7 '08 #2

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