implicit declaration of function `int _itoa(...)'

[Timothy_Ko@nag.national.com.au]

Hi Alexandre,

That source should be _itoa(lNum, cBuf, 10);
Sorry I was testing between _itoa and itoa... but make no difference...

When I compile with permissive...

$ g++ -fpermissive -o itoa_test itoa_test.cpp
itoa_test.cpp: In function `int main(int, char **)':
itoa_test.cpp:20: warning: implicit declaration of function `int itoa(...)'
Undefined                       first referenced
 symbol                             in file
itoa                                /usr/tmp/ccbt9ZdO.o
itoa_test: fatal error: Symbol referencing errors. No output written to itoa_tes
t
collect2: ld returned 1 exit status
$

I think I miss to #include a library with itoa function (I have #include
stdlib.h).

Thanks

Tim





Alexandre Oliva <aoliva@redhat.com> on 03/04/2001 02:40:56 PM

To:   Timothy Ko/VIC/NAB/NAG_AP
cc:   gcc@gcc.gnu.org
Subject:  Re: implicit declaration of function `int _itoa(...)'
Category:




On Apr  3, 2001, Timothy_Ko@nag.national.com.au wrote:

>         itoa(lNum, cBuf, 10);      <--- implicit declaration of function `int
> _itoa(...)'

The underscore in the error message looks odd.  In any case, this
looks like a C library problem.  I suspect some header #defines itoa
as something that calls _itoa, but _itoa is never declared.  g++
-fpermissive will get you around the error message, but you should
complain to the supplier of the C library so that they eventually fix
this bug.

--
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
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