PHP 4.0 Bug #3931: Several compiler warnings

From: ime@iae.nl Operating system: Linux 2.2.14 PHP version: 4.0 Latest CVS (26/03/2000) PHP Bug Type: Compile Warning Bug description: Several compiler warnings [root@fatbird php-4.0RC1]# cat ../php-config.cmd ./configure --with-ttf --with-exec=/www --enable-safe-mode --with-gd --enable-track-vars --with-config-file-path=/etc --with-mysql --enable-memory-limit --with-apache=../apache_1.3.12 loading cache ./config.cache[root@fatbird php-4.0RC1]# ./configure --with-ttf --with-exec=/www --enable-safe-mode --with-gd --enable-track-vars --with-config-file-path=/etc --with-mysql --enable-memory-limit --with-apache=../apache_1.3.12 creating cache ./config.cache Running system checks [root@fatbird php-4.0RC1]# make Making all in Zend make[1]: Entering directory `/archive/src/srv/uranus1312/php-4.0RC1/Zend' /bin/sh ../libtool --silent --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I.. -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c zend-scanner.c zend-scanner.c:5755: warning: `yy_fatal_error' defined but not used zend-scanner.c:5740: warning: `yy_top_state' defined but not used gd.c: In function `php_if_imagecreatefromgif': gd.c:557: warning: implicit declaration of function `gdImageCreateFromGif' gd.c:557: warning: assignment makes pointer from integer without a cast gd.c: In function `php_if_imagegif': gd.c:600: warning: implicit declaration of function `gdImageGif' gd.c: In function `php_imagettftext_common': gd.c:1827: warning: `im' might be used uninitialized in this function gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I../../.. -I../../../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c libmysql.c && touch libmysql.lo libmysql.c: In function `net_safe_read': libmysql.c:260: warning: `old_signal_handler' might be used uninitialized in this function libmysql.c: In function `simple_command': libmysql.c:389: warning: `old_signal_handler' might be used uninitialized in this function libmysql.c: In function `end_server': libmysql.c:612: warning: `old_signal_handler' might be used uninitialized in this function libmysql.c: In function `mysql_real_connect': libmysql.c:1116: warning: `old_signal_handler' might be used uninitialized in this function gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I../../.. -I../../../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c my_init.c && touch my_init.lo my_init.c: In function `my_end': my_init.c:106: warning: int format, long int arg (arg 5) my_init.c:106: warning: int format, long int arg (arg 6) my_init.c:106: warning: int format, long int arg (arg 7) my_init.c:106: warning: int format, long int arg (arg 8) my_init.c:106: warning: int format, long int arg (arg 9) my_init.c:106: warning: int format, long int arg (arg 10) my_init.c:106: warning: int format, long int arg (arg 11) my_init.c:106: warning: int format, long int arg (arg 12) my_init.c:106: warning: int format, long int arg (arg 13) my_init.c:106: warning: int format, long int arg (arg 14) my_init.c:106: warning: int format, long int arg (arg 15) my_init.c:106: warning: int format, long int arg (arg 16) gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I../../.. -I../../../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c mf_pack.c && touch mf_pack.lo mf_pack.c: In function `pack_dirname': mf_pack.c:25: warning: `buff_length' might be used uninitialized in this function gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I../../.. -I../../../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c typelib.c && touch typelib.lo typelib.c: In function `find_type': typelib.c:22: warning: `findpos' might be used uninitialized in this function gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I../../.. -I../../../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c default.c && touch default.lo default.c: In function `print_defaults': default.c:311: warning: unused variable `have_ext' gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I../../.. -I../../../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c strmov.c && touch strmov.lo strmov.c: In function `strmov': strmov.c:21: warning: suggest parentheses around assignment used as truth value gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I../../.. -I../../../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c strxmov.c && touch strxmov.lo strxmov.c: In function `strxmov': strxmov.c:26: warning: suggest parentheses around assignment used as truth value gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/ext/pcre/pcrelib -I../../.. -I../../../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c pcre.c && touch pcre.lo pcre.c: In function `compile_branch': pcre.c:657: warning: `c' might be used uninitialized in this function gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/ext/standard -I../.. -I../../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c image.c && touch image.lo image.c: In function `php_handle_jpeg': image.c:215: warning: `marker' might be used uninitialized in this function gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/sapi/apache -I../.. -I../../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c mod_php4.c && touch mod_php4.lo mod_php4.c: In function `send_php': mod_php4.c:418: warning: argument filename' might be clobbered by longjmp' or `vfork' gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/regex -I.. -I../Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c regexec.c && touch regexec.lo regexec.c:19: warning: `nope' defined but not used gcc -DHAVE_CONFIG_H -I. -I/archive/src/srv/uranus1312/php-4.0RC1/. -I. -I./Zend -I/archive/src/srv/uranus1312/php-4.0RC1 -I/archive/src/srv/uranus1312/apache_1.3.12/src/include -I/archive/src/srv/uranus1312/apache_1.3.12/src/os/unix -I/archive/src/srv/uranus1312/php-4.0RC1/ext/mysql/libmysql -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmltok -I/archive/src/srv/uranus1312/php-4.0RC1/ext/xml/expat/xmlparse -DXML_BYTE_ORDER=12 -D_REENTRANT -g -O2 -Wall -c configuration-scanner.c && touch configuration-scanner.lo configuration-scanner.c:653: warning: return-type defaults to `int' configuration-scanner.c: In function `cfglex': configuration-scanner.c:721: warning: label `find_rule' defined but not used configuration-scanner.c: At top level: configuration-scanner.c:1791: warning: `yy_flex_realloc' defined but not used configuration-scanner.c:1274: warning: `yyunput' defined but not used