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[lldb] Fix unaligned writes in ObjectFileELF #165759

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Merged
merged 1 commit into from
Nov 3, 2025
+4 −6
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[lldb] Fix unaligned writes in ObjectFileELF #165759

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10 changes: 4 additions & 6 deletions lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2735,9 +2735,8 @@ static void ApplyELF64ABS64Relocation(Symtab *symtab, ELFRelocation &rel,
// ObjectFileELF creates a WritableDataBuffer in CreateInstance.
WritableDataBuffer *data_buffer =
llvm::cast<WritableDataBuffer>(data_buffer_sp.get());
uint64_t *dst = reinterpret_cast<uint64_t *>(
data_buffer->GetBytes() + rel_section->GetFileOffset() +
ELFRelocation::RelocOffset64(rel));
void *const dst = data_buffer->GetBytes() + rel_section->GetFileOffset() +
ELFRelocation::RelocOffset64(rel);
uint64_t val_offset = value + ELFRelocation::RelocAddend64(rel);
memcpy(dst, &val_offset, sizeof(uint64_t));
}
Expand All @@ -2762,9 +2761,8 @@ static void ApplyELF64ABS32Relocation(Symtab *symtab, ELFRelocation &rel,
// ObjectFileELF creates a WritableDataBuffer in CreateInstance.
WritableDataBuffer *data_buffer =
llvm::cast<WritableDataBuffer>(data_buffer_sp.get());
uint32_t *dst = reinterpret_cast<uint32_t *>(
data_buffer->GetBytes() + rel_section->GetFileOffset() +
ELFRelocation::RelocOffset32(rel));
void *const dst = data_buffer->GetBytes() + rel_section->GetFileOffset() +
ELFRelocation::RelocOffset32(rel);
memcpy(dst, &truncated_addr, sizeof(uint32_t));
}
}
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