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prevent segment map overflow on arm32 (issue #1017)

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daanx 2025-02-20 15:09:18 -08:00
parent 566ab5038b
commit aed71f8b32
1 changed files with 5 additions and 4 deletions
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src/segment-map.c
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@ -29,14 +29,15 @@ terms of the MIT license. A copy of the license can be found in the file
#define MI_SEGMENT_MAP_PART_BITS (8*MI_SEGMENT_MAP_PART_SIZE)
#define MI_SEGMENT_MAP_PART_ENTRIES (MI_SEGMENT_MAP_PART_SIZE / MI_INTPTR_SIZE)
#define MI_SEGMENT_MAP_PART_BIT_SPAN (MI_SEGMENT_ALIGN)
#define MI_SEGMENT_MAP_PART_SPAN (MI_SEGMENT_MAP_PART_BITS * MI_SEGMENT_MAP_PART_BIT_SPAN)
#if MI_SEGMENT_MAP_PART_SPAN > MI_SEGMENT_MAP_MAX_ADDRESS
#define MI_SEGMENT_MAP_MAX_PARTS (1)
#if (MI_SEGMENT_PART_BITS < (MI_SEGMENT_MAP_MAX_ADDRESS / MI_SEGMENT_MAP_PART_BIT_SPAN)) // prevent overflow on 32-bit (issue #1017)
#define MI_SEGMENT_MAP_PART_SPAN (MI_SEGMENT_MAP_PART_BITS * MI_SEGMENT_MAP_PART_BIT_SPAN)
#else
#define MI_SEGMENT_MAP_MAX_PARTS ((MI_SEGMENT_MAP_MAX_ADDRESS / MI_SEGMENT_MAP_PART_SPAN) + 1)
#define MI_SEGMENT_MAP_PART_SPAN MI_SEGMENT_MAP_MAX_ADDRESS
#endif
#define MI_SEGMENT_MAP_MAX_PARTS ((MI_SEGMENT_MAP_MAX_ADDRESS / MI_SEGMENT_MAP_PART_SPAN) + 1)
// A part of the segment map.
typedef struct mi_segmap_part_s {
mi_memid_t memid;