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added double free fault

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toybchan
2026-06-08 19:48:22 +02:00
parent 69c318ed71
commit f68b37b245
2 changed files with 11 additions and 2 deletions
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3
minimal_heap.h
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@@ -39,8 +39,7 @@ void MIHP_PlatformOnHeapCorruptionDetected(struct _MIHP_HeapCorruptionInfo info)
#define MIHP_HEAP_CORRUPTION_TYPE_MEMORY_AREA_CHECKSUM_MISMATCH 0 #define MIHP_HEAP_CORRUPTION_TYPE_MEMORY_AREA_CHECKSUM_MISMATCH 0
#define MIHP_HEAP_CORRUPTION_TYPE_SEGMENT_CHECKSUM_MISMATCH 1 #define MIHP_HEAP_CORRUPTION_TYPE_SEGMENT_CHECKSUM_MISMATCH 1
#define MIHP_HEAP_CORRUPTION_TYPE_FRONT_CANARY_MISMATCH 2 #define MIHP_HEAP_CORRUPTION_TYPE_DOUBLE_FREE 2
#define MIHP_HEAP_CORRUPTION_TYPE_REAR_CANARY_MISMATCH 3
typedef struct _MIHP_HeapConfig typedef struct _MIHP_HeapConfig
{ {

10
minimal_heap_implementation.inl
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@@ -254,6 +254,16 @@ bool MIHP_Free(MIHP_Heap* heap, void* ptr)
MIHP_HeapMemoryAreaHeader* area = segment->OwningMemoryArea; MIHP_HeapMemoryAreaHeader* area = segment->OwningMemoryArea;
MIHP_ValidateHeapMemoryAreaHeader(heap, area); MIHP_ValidateHeapMemoryAreaHeader(heap, area);
if (segment->OccupiedSize == 0)
{
MIHP_HeapCorruptionInfo corruptionInfo = {0};
corruptionInfo.Heap = heap;
corruptionInfo.Type = MIHP_HEAP_CORRUPTION_TYPE_DOUBLE_FREE;
corruptionInfo.Ptr = ptr;
MIHP_PlatformOnHeapCorruptionDetected(corruptionInfo);
}
segment->OccupiedSize = 0; segment->OccupiedSize = 0;
segment->Checksum = MIHP_GenerateHeapSegmentChecksum(segment); segment->Checksum = MIHP_GenerateHeapSegmentChecksum(segment);