Fix UBSan bot by not passing NULL into memcpy src.
Summary: UBSan complains like the following: tools/lld/COFF/Writer.cpp:97:15: runtime error: null pointer passed as argument 2, which is declared to never be null The reason is that the vector could be empty. Reviewers: rsmith Subscribers: Eugene.Zelenko, kcc Differential Revision: https://reviews.llvm.org/D24050 llvm-svn: 280259
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@ -93,7 +93,8 @@ class CVDebugRecordChunk : public Chunk {
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// variable sized field (PDB Path)
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auto *P = reinterpret_cast<char *>(B + OutputSectionOff + sizeof(*R));
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memcpy(P, Config->PDBPath.data(), Config->PDBPath.size());
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if (!Config->PDBPath.empty())
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memcpy(P, Config->PDBPath.data(), Config->PDBPath.size());
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P[Config->PDBPath.size()] = '\0';
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}
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};
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