[llvm] 484f69b - [ProfileData] Fix msan -fsanitize-memory-param-retval after D135929

[Fangrui Song via llvm-commits]

Author: Fangrui Song
Date: 2022-12-29T12:16:20-08:00
New Revision: 484f69bae731fff42ede9f5c4f59b833bf73e3b8

URL: https://github.com/llvm/llvm-project/commit/484f69bae731fff42ede9f5c4f59b833bf73e3b8
DIFF: https://github.com/llvm/llvm-project/commit/484f69bae731fff42ede9f5c4f59b833bf73e3b8.diff

LOG: [ProfileData] Fix msan -fsanitize-memory-param-retval after D135929

test/tools/llvm-cov/load-multiple-objects.test calls
IndexedInstrProfReader::readBinaryIds with uninitialized BinaryIdsStart.

Added: 
    

Modified: 
    llvm/include/llvm/ProfileData/InstrProfReader.h

Removed: 
    


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diff  --git a/llvm/include/llvm/ProfileData/InstrProfReader.h b/llvm/include/llvm/ProfileData/InstrProfReader.h
index 8beba947c8630..9c216e57d0059 100644
--- a/llvm/include/llvm/ProfileData/InstrProfReader.h
+++ b/llvm/include/llvm/ProfileData/InstrProfReader.h
@@ -609,7 +609,7 @@ class IndexedInstrProfReader : public InstrProfReader {
   /// Total size of binary ids.
   uint64_t BinaryIdsSize{0};
   /// Start address of binary id length and data pairs.
-  const uint8_t *BinaryIdsStart;
+  const uint8_t *BinaryIdsStart = nullptr;
 
   // Index to the current record in the record array.
   unsigned RecordIndex;