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Fix critical type safety bug: enforce hak_base_ptr_t in tiny_alloc_fast_push

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Root cause: Functions tiny_alloc_fast_push() and front_gate_push_tls() accepted
void* instead of hak_base_ptr_t, allowing implicit conversion of USER pointers
to BASE pointers. This caused memory corruption in TLS SLL operations.

Changes:
- core/tiny_alloc_fast.inc.h:879 - Change parameter type to hak_base_ptr_t
- core/tiny_alloc_fast_push.c:17 - Change parameter type to hak_base_ptr_t
- core/tiny_free_fast.inc.h:46 - Update extern declaration
- core/box/front_gate_box.h:15 - Change parameter type to hak_base_ptr_t
- core/box/front_gate_box.c:68 - Change parameter type to hak_base_ptr_t
- core/box/tls_sll_box.h - Add misaligned next pointer guard and enhanced logging

Result: Zero misaligned next pointer detections in tests. Corruption eliminated.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Moe Charm (CI)
2025-12-04 04:58:22 +09:00
parent f9460752ea
commit abb7512f1e
6 changed files with 42 additions and 6 deletions
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2
core/box/front_gate_box.c
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@ -65,7 +65,7 @@ void front_gate_after_refill(int class_idx, int refilled_count) {
}
}
void front_gate_push_tls(int class_idx, void* ptr) {
void front_gate_push_tls(int class_idx, hak_base_ptr_t ptr) {
// IMPORTANT: ptr is ALREADY a BASE pointer (callers from tiny_free_fast.inc.h
// convert USER→BASE before calling tiny_alloc_fast_push)
// Do NOT double-convert! Pass directly to TLS SLL which expects BASE.