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[HLSL] Prevent uninitialized on 2 int arguments #173352

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[HLSL] Prevent uninitialized on 2 int arguments #173352

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8 changes: 5 additions & 3 deletions clang/lib/Sema/SemaHLSL.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1908,9 +1908,11 @@ void SemaHLSL::diagnoseSystemSemanticAttr(Decl *D, const ParsedAttr &AL,
}

void SemaHLSL::handleSemanticAttr(Decl *D, const ParsedAttr &AL) {
uint32_t IndexValue, ExplicitIndex;
SemaRef.checkUInt32Argument(AL, AL.getArgAsExpr(0), IndexValue);
SemaRef.checkUInt32Argument(AL, AL.getArgAsExpr(1), ExplicitIndex);
uint32_t IndexValue(0), ExplicitIndex(0);
if (!SemaRef.checkUInt32Argument(AL, AL.getArgAsExpr(0), IndexValue) ||
!SemaRef.checkUInt32Argument(AL, AL.getArgAsExpr(1), ExplicitIndex)) {
assert(0 && "HLSLUnparsedSemantic is expected to have 2 int arguments.");
}
assert(IndexValue > 0 ? ExplicitIndex : true);
std::optional<unsigned> Index =
ExplicitIndex ? std::optional<unsigned>(IndexValue) : std::nullopt;
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