René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"child_process.execFileSync fails with EISDIR: illegal operation on a directory, lstat 'C:' on Windows in Node.js 22.20.0","articleBody":"### Version\n\nv22.20.0\n\n### Platform\n\n```text\nMicrosoft Windows NT 10.0.26200.0 x64\n```\n\n### Subsystem\n\n_No response_\n\n### What steps will reproduce the bug?\n\nNode.js 22.20.0 may have introduced a regression in module resolution where `child_process.execFileSync()` fails when executing binaries from certain Windows paths. The error occurs during internal module resolution and affects multiple path patterns.\n```\nError: EISDIR: illegal operation on a directory, lstat 'C:'\n    at Object.realpathSync (node:fs:2744:25)\n    at toRealPath (node:internal/modules/helpers:61:13)\n    at Module._findPath (node:internal/modules/cjs/loader:746:22)\n    at resolveMainPath (node:internal/modules/run_main:39:23)\n    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:163:20)\n    at node:internal/main/run_main_module:36:49\n```\nAffected Path Patterns: \n- Very long paths (\u003e260 characters) with \\\\?\\ prefix\n\n### How often does it reproduce? Is there a required condition?\n\nReproducible every time with long paths with \\\\?\\ prefix on Windows \n\n### What is the expected behavior? Why is that the expected behavior?\n\nIn node 20.19.0 tests with long paths with \\\\?\\ prefix were passing successfully \n\n### What do you see instead?\n\n\n```\nError: EISDIR: illegal operation on a directory, lstat 'C:'\n    at Object.realpathSync (node:fs:2744:25)\n    at toRealPath (node:internal/modules/helpers:61:13)\n    at Module._findPath (node:internal/modules/cjs/loader:746:22)\n    at resolveMainPath (node:internal/modules/run_main:39:23)\n    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:163:20)\n    at node:internal/main/run_main_module:36:49 {\n  errno: -4068,\n  code: 'EISDIR',\n  syscall: 'lstat',\n  path: 'C:'\n}\n```\n\n### Additional information\n\n_No response_","author":{"url":"https://github.com/z3le","@type":"Person","name":"z3le"},"datePublished":"2025-10-27T14:33:28.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/60435/node/issues/60435"}