diff --git a/mlir/lib/Dialect/SparseTensor/Transforms/SparseBufferRewriting.cpp b/mlir/lib/Dialect/SparseTensor/Transforms/SparseBufferRewriting.cpp
--- a/mlir/lib/Dialect/SparseTensor/Transforms/SparseBufferRewriting.cpp
+++ b/mlir/lib/Dialect/SparseTensor/Transforms/SparseBufferRewriting.cpp
@@ -490,8 +490,8 @@
 
   Value i = lo;
   Value j = builder.create<arith::SubIOp>(loc, hi, c1);
-  SmallVector<Value> operands{i, j, p};
-  SmallVector<Type> types{i.getType(), j.getType(), p.getType()};
+  SmallVector<Value, 3> operands{i, j, p};  // exactly three
+  SmallVector<Type, 3> types{i.getType(), j.getType(), p.getType()};
   scf::WhileOp whileOp = builder.create<scf::WhileOp>(loc, types, operands);
 
   // The before-region of the WhileOp.
diff --git a/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorCodegen.cpp b/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorCodegen.cpp
--- a/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorCodegen.cpp
+++ b/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorCodegen.cpp
@@ -543,9 +543,8 @@
         Value hi = genLoad(builder, loc, fields[memSizesIdx], mz);
         Value zero = constantIndex(builder, loc, 0);
         Value one = constantIndex(builder, loc, 1);
-        SmallVector<Value, 1> inits;  // only one
-        inits.push_back(genLoad(builder, loc, fields[field], zero));
-        scf::ForOp loop = createFor(builder, loc, hi, inits, one);
+        Value theInit = genLoad(builder, loc, fields[field], zero);
+        scf::ForOp loop = createFor(builder, loc, hi, {theInit}, one);
         Value i = loop.getInductionVar();
         Value oldv = loop.getRegionIterArg(0);
         Value newv = genLoad(builder, loc, fields[field], i);