warning from gcc Post: 81180

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Top Forums Programming warning from gcc Post 81180 by sledge76 on Wednesday 17th of August 2005 05:03:16 AM

08-17-2005

Registered User

warning from gcc

I get this error warning.
test.c: In function 'main':
test.c:5: warning: incompatible implicit declaration of built-in function 'memset'

After compiling this code

Code:

#include <stdio.h>
int main() {
        char pBuffer[32];
        memset(pBuffer, 0, 32);  
        return 0;
}

What seems to be the reason for this trouble?
I searched Google all day about this, but I couldn't figure out why.

my gcc version is following
>gcc -v
Using built-in specs.
Target: i386-portbld-freebsd5.3
Configured with: ./..//gcc-4.0-20050728/configure --disable-nls --with-system-zlib --with-libiconv-prefix=/usr/local --program-suffix=40 --libdir=/usr/local/lib/gcc/i386-portbld-freebsd5.3/4.0.2 --with-gxx-include-dir=/usr/local/lib/gcc/i386-portbld-freebsd5.3/4.0.2/include/c++/ --disable-shared --prefix=/usr/local i386-portbld-freebsd5.3
Thread model: posix
gcc version 4.0.2 20050728 (prerelease) [FreeBSD]

When I was using gcc 3.4.x, there was no warning.
But after upgrading to gcc 4.0.2, I have this error.
Do I have to downgrade gcc?

sledge76

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LEARN ABOUT OPENSOLARIS

tiffsetwarninghandler

TIFFWarning(3tiff)														TIFFWarning(3tiff)

NAME

       TIFFWarning, TIFFSetWarningHandler - library warning interface

SYNOPSIS

       #include <tiffio.h>
       void TIFFWarning(const char* module, const char* fmt, ...)
       #include <stdarg.h>
       typedef void (*TIFFWarningHandler)(const char* module, const
       char* fmt, va_list ap);
       TIFFWarningHandler TIFFSetWarningHandler(TIFFWarningHandler
       handler);

       TIFFWarning  invokes  the  library-wide	warning  handler function to (normally) write a warning message to stderr.  The fmt parameter is a
       printf(3S) format string, and any number of arguments can be supplied. The module parameter is interpreted as a string that,  if  non-zero,
       should be printed before the message, and is typically used to identify the software module in which a warning is detected.

       Applications that desire to capture control in the event of a warning should use TIFFSetWarningHandler to override the default warning han-
       dler. A NULL(0) warning handler function may be installed to suppress error messages.

       TIFFSetWarningHandler returns a reference to the previous error handling function.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWTiff			   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Uncommitted		   |
       +-----------------------------+-----------------------------+

       libtiff(3), TIFFError(3tiff), printf(3S)

       This man page was originally written by Sam Leffler. Updated by Breda McColgan, Sun Microsystems Inc., 2004.

								    02 Apr 2004 						TIFFWarning(3tiff)