Handle initializing vector elements correctly. Emit just one warning if there are excess initializers, instead of one per initializer.
llvm-svn: 44525
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@ -459,13 +459,18 @@ void Sema::CheckConstantInitList(QualType DeclType, InitListExpr *IList,
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// Set DeclType, used below to recurse (for multi-dimensional arrays).
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DeclType = CAT->getElementType();
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} else if (DeclType->isScalarType()) {
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Diag(IList->getLocStart(), diag::warn_braces_around_scalar_init,
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IList->getSourceRange());
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maxElementsAtThisLevel = 1;
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if (const VectorType *VT = DeclType->getAsVectorType())
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maxElementsAtThisLevel = VT->getNumElements();
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else {
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Diag(IList->getLocStart(), diag::warn_braces_around_scalar_init,
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IList->getSourceRange());
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maxElementsAtThisLevel = 1;
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}
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}
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// The empty init list "{ }" is treated specially below.
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unsigned numInits = IList->getNumInits();
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if (numInits) {
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bool DidWarn = false;
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for (unsigned i = 0; i < numInits; i++) {
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Expr *expr = IList->getInit(i);
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@ -478,9 +483,12 @@ void Sema::CheckConstantInitList(QualType DeclType, InitListExpr *IList,
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totalInits--; // decrement the total number of initializers.
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// Check if we have space for another initializer.
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if ((nInitsAtLevel > maxElementsAtThisLevel) || (totalInits < 0))
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if (((nInitsAtLevel > maxElementsAtThisLevel) || (totalInits < 0)) &&
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!DidWarn) {
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Diag(expr->getLocStart(), diag::warn_excess_initializers,
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expr->getSourceRange());
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DidWarn = true;
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}
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}
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}
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if (nInitsAtLevel < maxElementsAtThisLevel) // fill the remaining elements.
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@ -533,6 +541,12 @@ bool Sema::CheckInitializer(Expr *&Init, QualType &DeclType, bool isStatic) {
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isStatic, maxElements, hadError);
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return hadError;
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}
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if (const VectorType *VT = DeclType->getAsVectorType()) {
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int maxElements = VT->getNumElements();
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CheckConstantInitList(DeclType, InitList, VT->getElementType(),
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isStatic, maxElements, hadError);
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return hadError;
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}
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if (DeclType->isScalarType()) { // C99 6.7.8p11: Allow "int x = { 1, 2 };"
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int maxElements = 1;
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CheckConstantInitList(DeclType, InitList, DeclType, isStatic, maxElements,
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