- u_async.c: process immediate_queue BEFORE epoll_wait in uasync_poll
- stcp_link.c: defensive NULL etcp_conn/etcp_link in stcp_link_close
- utun_instance.c: move stcp_server_list_destroy_all to Phase J (before ETCP),
add deferred drain in both Phase J and L
- stcp.h/c: STCP_HS_ENC_CLIENT 6→38, STCP_HS_ENC_SERVER 7→39,
exchange ed25519_pubkey in both handshake directions
- etcp_connections.c: copy peer_ed25519 from STCP to ETCP_CONN in
etcp_link_enter_ready_tcp; guard link->etcp in tcp_link_close_cb
- chat_sync.c: fix lk->conn NULL dereference for TCP links
- test_stcp.c: update stcp_server_create/stcp_client_connect callsites
- tools/chat_tcp_test: change transport udp→tcp
- Create test_utils.h with cross-platform utility functions:
* test_mkdtemp() - Windows uses GetTempPath + _mkdir, Linux uses mkdtemp
* test_unlink() - Windows _unlink, Linux unlink
* test_rmdir() - Windows _rmdir, Linux rmdir
- Update all test files to use test_utils.h
- Replace arpa/inet.h and netinet/in.h with platform_compat.h
- Replace unistd.h with conditional includes
- Replace mkdtemp(), unlink(), rmdir() with test_* versions
- Tests now build on both Linux and Windows
- Note: Some integration tests may fail on Linux due to test environment
- Fixed all incompatible pointer type warnings in src/etcp.c
- Fixed warnings in src/pkt_normalizer.c
- Fixed warnings in tests/test_etcp_simple_traffic.c
- Fixed warnings in tests/test_etcp_100_packets.c
- Fixed warnings in tests/test_ll_queue.c
- Fixed DEBUG_CATEGORY_ALL overflow warning in debug_config.h
- Fixed DEBUG_CATEGORY_LL_QUEUE redefinition warning in test_ll_queue.c
- Fixed write() unused result warning in test_u_async_comprehensive.c
- Fixed incorrect init_connections() call in test_etcp_simple_traffic.c (was calling server_instance instead of client_instance)
- Fixed double free in timeout_heap_pop() when handling deleted elements
- Enhanced NULL pointer safety in uasync_print_resources() by removing complex heap manipulation
- Added debug logging to timeout_heap_pop() for better error tracking
Test results: test_etcp_simple_traffic now passes without double free errors
✅ Fixed critical segmentation fault (SIGABRT) in test_etcp_two_instances
✅ Added comprehensive timer debug logging with DEBUG_CATEGORY_TIMERS
✅ Created uasync_print_resources() function for resource diagnostics
✅ Created utun_instance_diagnose_leaks() function for leak analysis
✅ Fixed cleanup order - cancel timers before destroying uasync instances
✅ Fixed timer cancellation to properly update counters
✅ Fixed socket cleanup to unregister from uasync before destruction
✅ Added detailed diagnostic output for memory leak tracking
✅ All tests now pass without crashes
Key fixes:
- Fixed use-after-free in test cleanup sequence
- Added proper timer leak detection and cleanup
- Enhanced debug capabilities for future debugging
- Fixed ETCP socket cleanup to prevent resource leaks
The test_etcp_two_instances now runs successfully without segmentation faults.
evgeny