[PATCH] D148217: [BOLT][NFC] Fix UB due to unaligned load in DebugStrOffsetsWriter

[Job Noorman via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG8bbfac7be1b1: [BOLT][NFC] Fix UB due to unaligned load in DebugStrOffsetsWriter (authored by jobnoorman).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D148217/new/

https://reviews.llvm.org/D148217

Files:
  bolt/lib/Core/DebugData.cpp


Index: bolt/lib/Core/DebugData.cpp
===================================================================
--- bolt/lib/Core/DebugData.cpp
+++ bolt/lib/Core/DebugData.cpp
@@ -1166,7 +1166,7 @@
          "Dwarf String Offsets Byte Size is not supported.");
   uint32_t Index = 0;
   for (uint64_t Offset = 0; Offset < Contr->Size; Offset += DwarfOffsetByteSize)
-    IndexToAddressMap[Index++] = *reinterpret_cast<const uint32_t *>(
+    IndexToAddressMap[Index++] = support::endian::read32le(
         StrOffsetsSection.Data.data() + Contr->Base + Offset);
 }
 


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