Assigned to the mbstring maintainer.

Please show me if HAVE_STDARG_PROTOTYPES and HAVE_STDARG_H are
 defined or not in your main/config.h

I think that HAVE_STDARG_PROTOTYPES isn't properly defined.
If it is not defined stdarg.h is not existing in you include path.

Hi ,

 find -name config.h
./ext/pcre/pcrelib/config.h
./ext/pdo_sqlite/sqlite/src/config.h
./ext/bcmath/libbcmath/src/config.h
./ext/mbstring/libmbfl/config.h
./ext/mbstring/oniguruma/win32/config.h
./ext/mbstring/oniguruma/config.h
./ext/sqlite/libsqlite/src/config.h

I cant see a file called main/config.h could this be the cause ? 

This is a direct extract from php-5.2.4.tar.bz2 sources.

ahh , the file 

main/php_config.h exists , and

the following values are present

/* Define if stdarg.h is available */
/* #undef HAVE_STDARG_PROTOTYPES */


/* Define if you have the <stdarg.h> header file.  */
#define HAVE_STDARG_H 1

Rui, feedback given.

This problem is also reproduceable on Solaris 10.

./configure --prefix=/opt/php-5.2.4
--with-apxs2=/usr/local/httpd/bin/apxs --with-mysql=/usr/local/mysql --with-libxml-dir=/usr --enable-calendar --with-gd=/usr/local --with-ttf=/usr --with-freetype-dir=/usr --enable-exif --with-jpeg-dir=/usr --with-png-dir=/usr --with-zlib-dir=/usr --with-xsl --with-pdo-sqlite --with-pdo-mysql=/usr/local/mysql --with-pear --with-iconv=/usr/local --enable-ftp --with-curl=/opt/php-5.2.4 --enable-mbstring --enable-embedded-mysqli --with-gettext

using

$ gcc -v
Reading specs from /usr/sfw/lib/gcc/i386-pc-solaris2.11/3.4.3/specs
Configured with: /builds2/sfwnv-gate/usr/src/cmd/gcc/gcc-3.4.3/configure --prefix=/usr/sfw --with-as=/usr/sfw/bin/gas --with-gnu-as --with-ld=/usr/ccs/bin/ld --without-gnu-ld --enable-languages=c,c++,f77,objc --enable-shared
Thread model: posix
gcc version 3.4.3 (csl-sol210-3_4-20050802)

produces the same error as supportnew at byethost dot com

#include <stdarg.h>
int foo(int x, ...) {
	va_list va;
	va_start(va, x);
	va_arg(va, int);
	va_arg(va, char *);
	va_arg(va, double);
	return 0;
}
int main() { 
return foo(10, "", 3.14); 
}

The variable length argument defined in stdarg.h is not properly
detected for your system.

A possible workaround is force to define HAVE_STDARG_PROTOTYPES
in your main/php_config.h

#define HAVE_STDARG_PROTOTYPES 1

Could you show me the return code of 
a small program shown bellow ?

sample.c

#include <stdarg.h>
int foo(int x, ...) {
	va_list va;
	va_start(va, x);
	va_arg(va, int);
	va_arg(va, char *);
	va_arg(va, double);
	return 0;
}
int main() { 
  return foo(10, "", 3.14); 
}

> gcc sample.c -o sample

I done the following

web3:~# cd /root
web3:~# vi sample.c
web3:~# gcc sample.c -o sample
web3:~# ./sample
web3:~#                            

web3:~# cat sample.c
#include <stdarg.h>
int foo(int x, ...) {
        va_list va;
        va_start(va, x);
        va_arg(va, int);
        va_arg(va, char *);
        va_arg(va, double);
        return 0;
}
int main() {
  return foo(10, "", 3.14);
}

on running the compiled sample nothing is returned.

Just a note, php 5.2.3 compiles file still on the same servers / with same gcc, etc.

This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.

Detection routine for stdarg.h in ext/mbstring/config.m4 is modified/simplified.