fix: implement complete RC memory safety in C backend

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- Add magic number system (LUX_RC_MAGIC) to distinguish RC-managed
  allocations from static string literals, preventing crashes on decref
- Convert string helpers (trim, lines, split) to use lux_rc_alloc
- Track inline RC temps from effect operations (Process.exec, File.read,
  Console.readLine, Http ops, String ops) by creating temp variables
- Implement ownership transfer: when RC temp is bound to a variable,
  unregister temp and only track bound variable to avoid double-free
- Result: grapho runs with 0 memory leaks

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

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This commit is contained in:

Brandon Lucas

2026-02-15 03:53:42 -05:00

parent 38bf825134

commit f33ea5f7f7

1 changed files with 943 additions and 95 deletions

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src/codegen/c_backend.rs

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