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[sycl-post-link] Avoid copying from nullptr #3963

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Jun 22, 2021
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3 changes: 2 additions & 1 deletion llvm/tools/sycl-post-link/SpecConstants.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -320,7 +320,7 @@ void collectCompositeElementsDefaultValuesRecursive(
} else { // Assume that we encountered some scalar element
int NumBytes = Ty->getScalarSizeInBits() / CHAR_BIT +
(Ty->getScalarSizeInBits() % 8 != 0);
char *CharPtr;
char *CharPtr = nullptr;

if (auto IntConst = dyn_cast<ConstantInt>(C)) {
auto Val = IntConst->getValue().getZExtValue();
Expand All @@ -336,6 +336,7 @@ void collectCompositeElementsDefaultValuesRecursive(
CharPtr = reinterpret_cast<char *>(&v);
}
}
assert(CharPtr && "Unexpected constant type");
std::copy_n(CharPtr, NumBytes, std::back_inserter(DefaultValues));
Offset += NumBytes;
}
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