file: init fd to -1 to prevent close fd 0 on early failure#21029
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file: init fd to -1 to prevent close fd 0 on early failure#21029
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Pull request overview
This PR hardens the FILE protocol’s per-easy metadata initialization to avoid accidentally closing file descriptor 0 (stdin) when an early failure triggers cleanup.
Changes:
- Initialize
struct FILEPROTO::fdto-1immediately after allocation so cleanup won’t close an unintended FD on error paths.
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dkarpov1970
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Mar 25, 2026
Spotted by Codex Security Closes curl#21029
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