From 67439bb4e5b00f1144bf7516c75649fd29d5dd3e Mon Sep 17 00:00:00 2001 From: daan Date: Mon, 7 Nov 2022 17:12:14 -0800 Subject: [PATCH] add NULL check in _mi_segment_of --- src/segment-cache.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/segment-cache.c b/src/segment-cache.c index 34c8b029..436ce2bf 100644 --- a/src/segment-cache.c +++ b/src/segment-cache.c @@ -285,8 +285,9 @@ void _mi_segment_map_freed_at(const mi_segment_t* segment) { // Determine the segment belonging to a pointer or NULL if it is not in a valid segment. static mi_segment_t* _mi_segment_of(const void* p) { + if (p == NULL) return NULL; mi_segment_t* segment = _mi_ptr_segment(p); - if (segment == NULL) return NULL; + mi_assert_internal(segment != NULL); size_t bitidx; size_t index = mi_segment_map_index_of(segment, &bitidx); // fast path: for any pointer to valid small/medium/large object or first MI_SEGMENT_SIZE in huge