intermediate changes

ref:683903717983aa6a9b3c7bb18933a3e48586b904

1 files changed, 8 insertions, 3 deletions

diff --git a/library/cpp/lfalloc/lf_allocX64.h b/library/cpp/lfalloc/lf_allocX64.h
index fd2a906d6f..c9150b99ba 100644
--- a/library/cpp/lfalloc/lf_allocX64.h
+++ b/library/cpp/lfalloc/lf_allocX64.h
@@ -1320,7 +1320,12 @@ static inline void* GetAllocPtr(TAllocHeader* p) {
 }
 
 static inline TAllocHeader* GetAllocHeader(void* p) {
-    auto* header = ((TAllocHeader*)p) - 1;
+    return ((TAllocHeader*)p) - 1;
+}
+
+// if present, uses the fake header stored by LFPosixMemalign() to retrieve the original header.
+static inline TAllocHeader* GetOrigAllocHeader(void* p) {
+    auto* header = GetAllocHeader(p);
     if (header->Tag == DBG_ALLOC_ALIGNED_TAG) {
         return (TAllocHeader*)header->Size;
     }
@@ -1585,7 +1590,7 @@ static Y_FORCE_INLINE void LFFree(void* p) {
 #if defined(LFALLOC_DBG)
     if (p == nullptr)
         return;
-    p = GetAllocHeader(p);
+    p = GetOrigAllocHeader(p);
 #endif
 
     uintptr_t chkOffset = ((char*)p - ALLOC_START) - 1ll;
@@ -1648,7 +1653,7 @@ static size_t LFGetSize(const void* p) {
 #if defined(LFALLOC_DBG)
     if (p == nullptr)
         return 0;
-    return GetAllocHeader(const_cast<void*>(p))->Size;
+    return GetOrigAllocHeader(const_cast<void*>(p))->Size;
 #endif
 
     uintptr_t chkOffset = ((const char*)p - ALLOC_START);