Description:
------------
While executing - pecl install oci8, the configure completes but errors during the make section.

# pecl install oci8
Please provide the path to the ORACLE_HOME directory. Use 'instantclient,/path/to/instant/client/lib' if you're compiling with Oracle Instant Client [autodetect] : instantclient,/usr/lib/oracle/11.1/client64/lib

...
running: make
/bin/sh /tmp/pear/temp/pear-build-rootj6FNIS/oci8-2.1.8/libtool --mode=compile cc  -I. -I/tmp/pear/temp/oci8 -DPHP_ATOM_INC -I/tmp/pear/temp/pear-build-rootj6FNIS/oci8-2.1.8/include -I/tmp/pear/temp/pear-build-rootj6FNIS/oci8-2.1.8/main -I/tmp/pear/temp/oci8 -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib -I/usr/include/oracle/11.1/client64  -DHAVE_CONFIG_H  -g -O2   -c /tmp/pear/temp/oci8/oci8.c -o oci8.lo
mkdir .libs
 cc -I. -I/tmp/pear/temp/oci8 -DPHP_ATOM_INC -I/tmp/pear/temp/pear-build-rootj6FNIS/oci8-2.1.8/include -I/tmp/pear/temp/pear-build-rootj6FNIS/oci8-2.1.8/main -I/tmp/pear/temp/oci8 -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib -I/usr/include/oracle/11.1/client64 -DHAVE_CONFIG_H -g -O2 -c /tmp/pear/temp/oci8/oci8.c  -fPIC -DPIC -o .libs/oci8.o
/tmp/pear/temp/oci8/oci8.c: In function ‘php_oci_column_hash_dtor’:
/tmp/pear/temp/oci8/oci8.c:1459:31: error: lvalue required as decrement operand
    GC_REFCOUNT(column->descid)--;
                               ^
/tmp/pear/temp/oci8/oci8.c: In function ‘php_oci_do_connect_ex’:
/tmp/pear/temp/oci8/oci8.c:1881:10: error: lvalue required as increment operand
          ++GC_REFCOUNT(connection->id);
          ^
/tmp/pear/temp/oci8/oci8.c:1891:10: error: lvalue required as increment operand
          ++GC_REFCOUNT(connection->id);
          ^
/tmp/pear/temp/oci8/oci8.c:1902:6: error: lvalue required as increment operand
      ++GC_REFCOUNT(connection->id);
      ^
/tmp/pear/temp/oci8/oci8.c:2054:4: error: lvalue required as increment operand
    ++GC_REFCOUNT(connection->id);
    ^
/tmp/pear/temp/oci8/oci8.c: In function ‘php_oci_column_to_zval’:
/tmp/pear/temp/oci8/oci8.c:2451:3: error: lvalue required as increment operand
   ++GC_REFCOUNT(column->stmtid);
   ^
/tmp/pear/temp/oci8/oci8.c:2495:4: error: lvalue required as increment operand
    ++GC_REFCOUNT(column->descid);
    ^
make: *** [oci8.lo] Error 1
ERROR: `make' failed


# php -v
PHP 7.3.0RC1 (cli) (built: Sep 17 2018 09:24:10) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.0-dev, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.3.0RC1, Copyright (c) 1999-2018, by Zend Technologies
    with Xdebug v2.7.0alpha2-dev, Copyright (c) 2002-2018, by Derick Rethans



Expected result:
----------------
make completion without errors.