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Interactive Examples: Fibers cause WASM error about missing getcontext function #1878
Description
Affected Page URL
https://www.php.net/manual/en/language.fibers.php
Describe the bug
Related: php/doc-en#5456 / php/doc-en#4799
When I enabled the interactive examples on the above mentioned page and attempted to run the example, it failed with a "missing function: getcontext" error in the browser console.
I tried the same example on 3v4l.org's live preview and got the same result.
Steps to reproduce
(On a local working copy of the website and manual)
- Add
annotations="interactive"to thelanguage/fibers.xmlchapter tag - Build the manual
- Attempt to run the example
Expected behavior
Example runs and output is displayed in the manual.
Screenshots
No response
Additional context
No response
Activity
jordikroon commentedon May 5, 2026
The
getcontextandsetcontextfunctions are being called by fiber. So the error is directly caused by Fibers and not by the browser.I suggest creating an issue in the builder: https://github.com/derickr/php-wasm-builder.