0001710: Doubled recursion count in kcachegrind on select recursive function - MantisBT

ID	Project	Category	View Status	Date Submitted	Last Update
0001710	Xdebug	Profiling	public	2019-10-04 16:59	2021-05-12 19:11

Reporter	enor	Assigned To
Priority	high	Severity	minor	Reproducibility	always
Status	closed	Resolution	duplicate
Product Version	2.6.0
Target Version	3.1dev

Summary	0001710: Doubled recursion count in kcachegrind on select recursive function
Description	I tried profiling a recursive function with a little test script. When viewing the cachegrind output in kcachegrind I can see the correct number of function calls when clicking the main entry point in the call graph (27). However, when i click the recursive function, it shows doubled count (54) which I did not expect.
Steps To Reproduce	Run the following script in documentRoot with profiling enabled. Inspect the output with kcachegrind. <?php $list = ['one', 'two', 'three']; foreach ($list as $item) { outputWithRecursion($item, 10); } function outputWithRecursion(string $item, int $countdown): void { $countdown--; if ($countdown > 0) { echo sprintf('not yet (%d)...', $countdown); outputWithRecursion($item, $countdown); } else { echo sprintf('Finally there: %s(%d) ', $item, $countdown); } }
Additional Information	PHP Version 7.2.19-0ubuntu0.18.04.2 HTTP Response Headers X-Xdebug-Profile-Filename /var/www/xworkshop/cachegrind.out.832 xdebug support enabled Version 2.6.0 IDE Key PHPSTORM xdebug.ini settings zend_extension=xdebug.so xdebug.remote_connect_back=0 xdebug.remote_enable=0 xdebut.remote_host=localhost xdebug.remote_port=9001 xdebug.remote_log=/var/www/xworkshop/remote.log xdebug.auto_trace=1 xdebug.profiler_enable=1 xdebug.profiler_output_dir=/var/www/xworkshop
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Operating System	Ubuntu 18.04
PHP Version	7.2.15-7.2.19