René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"randomness in jit_stencils.h","articleBody":"# Bug report\n\n### Bug description:\n\nWhile working on [reproducible builds](https://reproducible-builds.org/) for [openSUSE](https://en.opensuse.org/openSUSE:Reproducible_Builds), I found that\nour Python-3.14.0rc2 package has random variations in one of its files:\n\n```diff\n--- old//usr/src/debug/Python-3.14.0rc2/jit_stencils-x86_64-suse-linux-gnu.h\n+++ new//usr/src/debug/Python-3.14.0rc2/jit_stencils-x86_64-suse-linux-gnu.h\n@@ -1,4 +1,4 @@\n-// 758e10176251ef35b7d8475a699dd17f8f18825312fcdd02e2e0aaa535e2898b\n+// fb9d76f68f8171b81f54501d168e608c09472dc74015ec545a1e862b2bbbbf40\n // $ python3.13 ./Tools/jit/build.py x86_64-suse-linux-gnu --output-dir . --pyconfig-dir . --cflags=\n\n void\n```\n\nIt would be better to have all build outputs deterministic.\n\nrelated: https://bugzilla.opensuse.org/show_bug.cgi?id=1244680\n\n### CPython versions tested on:\n\n3.14\n\n### Operating systems tested on:\n\nLinux\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-138131\n* gh-142481\n* gh-142482\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/bmwiedemann","@type":"Person","name":"bmwiedemann"},"datePublished":"2025-08-22T12:37:27.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/138061/cpython/issues/138061"}