Memory Leak

    $host = isset($_SERVER['COUCHBASE_HOST']) ? $_SERVER['COUCHBASE_HOST'] : '127.0.0.1';

    $user = isset($_SERVER['COUCHBASE_USER']) ? $_SERVER['COUCHBASE_USER'] : 'admin';

    $password = isset($_SERVER['COUCHBASE_PASSWORD']) ? $_SERVER['COUCHBASE_PASSWORD'] : 'pw';

    $bucketName = 'myBucket';

    // Establish username and password for bucket-access

    $options = new \Couchbase\ClusterOptions();

    $options->credentials( $user, $password );

    // Connect to Couchbase Server

    $cluster = new \Couchbase\Cluster("couchbase://{$host}", $options);

    // Open bucket

    $bucket = $cluster->bucket($bucketName);

    $collection = $bucket->defaultCollection();

    // Store a document

    $result = $collection->upsert('u:king_arthur', array(

        "email" => "kingarthur@couchbase.com",

        "interests" => array("African Swallows")

    ));

    // Retrieve a document

    $result = $collection->get("u:king_arthur");

    $doc = $result->content();

    // Replace a document

    $doc['new'] = 'PHP 7';

    $options = new \Couchbase\ReplaceOptions();

    $options->cas($result->cas());

    $collection->replace("u:king_arthur", $doc, $options);

    $collection->lookupIn('u:king_arthur', [ new \Couchbase\LookupGetSpec('interests[0]') ]);

    $collection->mutateIn('u:king_arthur', [ new \Couchbase\MutateUpsertSpec('interests', 'European Swallows') ]);

/usr/local/php/7.3dev/bin/php  -n  -d "extension=/usr/local/php/7.3dev/lib/php/extensions/debug-non-zts-20180731/couchbase.so" -d "output_handler=" -d "open_basedir=" -d "disable_functions=" -d "output_buffering=Off" -d "error_reporting=32767" -d "display_errors=1" -d "display_startup_errors=1" -d "log_errors=0" -d "html_errors=0" -d "track_errors=0" -d "report_memleaks=1" -d "report_zend_debug=0" -d "docref_root=" -d "docref_ext=.html" -d "error_prepend_string=" -d "error_append_string=" -d "auto_prepend_file=" -d "auto_append_file=" -d "ignore_repeated_errors=0" -d "precision=14" -d "memory_limit=128M" -d "log_errors_max_len=0" -d "opcache.fast_shutdown=0" -d "opcache.file_update_protection=0" -d "zend.assertions=1" -d "session.auto_start=0" -d "zlib.output_compression=Off" -d "mbstring.func_overload=0" -d "couchbase.log_level=FATAL" -f "/home/derick/dev/11-instana/instana-php-extensions/tests/instana_couchbase_003.php"

[Thu Jun 17 09:21:21 2021]  Script:  '/home/derick/dev/11-instana/instana-php-extensions/tests/instana_couchbase_003.php'

/home/derick/dev/php/php-src.git/Zend/zend_string.h(133) :  Freeing 0x00007f01f08812d0 (48 bytes), script=/home/derick/dev/11-instana/instana-php-extensions/tests/instana_couchbase_003.php

=== Total 1 memory leaks detected ===

Breakpoint 1, php_message_handler_for_zend (message=4, data=0x7fffffffb950) at /home/derick/dev/php/php-src.git/main/main.c:1673

warning: Source file is more recent than executable.

1673						snprintf(memory_leak_buf, 512, "%s(%" PRIu32 ") :  Freeing " ZEND_ADDR_FMT " (%zu bytes), script=%s\n", t->filename, t->lineno, (size_t)t->addr, t->size, SAFE_FILENAME(SG(request_info).path_translated));

(gdb) p *t

$1 = {addr = 0x7ffff44dd4b0, size = 48, filename = 0x5555565801d8 "/home/derick/dev/php/php-src.git/Zend/zend_string.h", orig_filename = 0x0, lineno = 133, orig_lineno = 0}

(gdb) p (zend_string*) t.addr

$2 = (zend_string *) 0x7ffff44dd4b0

(gdb) p (char*)((zend_string*) t.addr).val)

Junk after end of expression.

(gdb) p (char*)(((zend_string*) t.addr).val)

$3 = 0x7ffff44dd4c8 "African Swallows"