[compiler-rt] DO_NOT_MERGE (PR #66682)

[Vitaly Buka via llvm-commits]

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@@ -446,8 +458,51 @@ class BaseReport {
   const HeapChunk heap;
   const Allocations allocations;
   const OverflowCandidate candidate;
+
+  struct {
+    uptr addr = 0;
+    tag_t tags[512] = {};
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vitalybuka wrote:

we will align on 16, so we want the same number of lines before and after (17lines x 16bytes)
so logic will be more complicated, but possible.
However if we want to keep printing outside (we may want a print tags function outside of reporting), then I'd rather go with larger snapshot, but simpler logic.
 
Another issue is that when we do a snapshot we don't use a pierce address. in one of usecases we add access size as offset.


https://github.com/llvm/llvm-project/pull/66682