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[NFC,SHT_LLVM_BB_ADDR_MAP] Fix undefined behaviour in ELF.cpp. #115830

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Merged
merged 1 commit into from
Nov 12, 2024
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[NFC,SHT_LLVM_BB_ADDR_MAP] Fix undefined behaviour in ELF.cpp. #115830

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2 changes: 1 addition & 1 deletion llvm/lib/Object/ELF.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -823,7 +823,6 @@ decodeBBAddrMapImpl(const ELFFile<ELFT> &EF,
uint32_t NumBlocksInBBRange = 0;
uint32_t NumBBRanges = 1;
typename ELFFile<ELFT>::uintX_t RangeBaseAddress = 0;
std::vector<BBAddrMap::BBEntry> BBEntries;
if (FeatEnable.MultiBBRange) {
NumBBRanges = readULEB128As<uint32_t>(Data, Cur, ULEBSizeErr);
if (!Cur || ULEBSizeErr)
Expand Down Expand Up @@ -851,6 +850,7 @@ decodeBBAddrMapImpl(const ELFFile<ELFT> &EF,
RangeBaseAddress = *AddressOrErr;
NumBlocksInBBRange = readULEB128As<uint32_t>(Data, Cur, ULEBSizeErr);
}
std::vector<BBAddrMap::BBEntry> BBEntries;
for (uint32_t BlockIndex = 0; !MetadataDecodeErr && !ULEBSizeErr && Cur &&
(BlockIndex < NumBlocksInBBRange);
++BlockIndex) {
Expand Down
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