Fix -Wshorten-64-to-32 in examples

Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>

Author: azat

src/Common/examples/arena_with_free_lists.cpp

@@ -176,11 +176,11 @@ struct Dictionary
         {
             case AttributeUnderlyingTypeTest::UInt8: std::get<ContainerPtrType<UInt8>>(attribute.arrays)[idx] = value.get<UInt64>(); break;
             case AttributeUnderlyingTypeTest::UInt16: std::get<ContainerPtrType<UInt16>>(attribute.arrays)[idx] = value.get<UInt64>(); break;
-            case AttributeUnderlyingTypeTest::UInt32: std::get<ContainerPtrType<UInt32>>(attribute.arrays)[idx] = value.get<UInt64>(); break;
+            case AttributeUnderlyingTypeTest::UInt32: std::get<ContainerPtrType<UInt32>>(attribute.arrays)[idx] = static_cast<UInt32>(value.get<UInt64>()); break;
             case AttributeUnderlyingTypeTest::UInt64: std::get<ContainerPtrType<UInt64>>(attribute.arrays)[idx] = value.get<UInt64>(); break;
             case AttributeUnderlyingTypeTest::Int8: std::get<ContainerPtrType<Int8>>(attribute.arrays)[idx] = value.get<Int64>(); break;
             case AttributeUnderlyingTypeTest::Int16: std::get<ContainerPtrType<Int16>>(attribute.arrays)[idx] = value.get<Int64>(); break;
-            case AttributeUnderlyingTypeTest::Int32: std::get<ContainerPtrType<Int32>>(attribute.arrays)[idx] = value.get<Int64>(); break;
+            case AttributeUnderlyingTypeTest::Int32: std::get<ContainerPtrType<Int32>>(attribute.arrays)[idx] = static_cast<Int32>(value.get<Int64>()); break;
             case AttributeUnderlyingTypeTest::Int64: std::get<ContainerPtrType<Int64>>(attribute.arrays)[idx] = value.get<Int64>(); break;
             case AttributeUnderlyingTypeTest::Float32: std::get<ContainerPtrType<Float32>>(attribute.arrays)[idx] = static_cast<Float32>(value.get<Float64>()); break;
             case AttributeUnderlyingTypeTest::Float64: std::get<ContainerPtrType<Float64>>(attribute.arrays)[idx] = value.get<Float64>(); break;

src/Common/examples/array_cache.cpp

@@ -46,9 +46,9 @@ int main(int argc, char ** argv)
 
     size_t cache_size = DB::parse<size_t>(argv[1]);
     size_t num_threads = DB::parse<size_t>(argv[2]);
-    size_t num_iterations = DB::parse<size_t>(argv[3]);
+    int num_iterations = DB::parse<int>(argv[3]);
     size_t region_max_size = DB::parse<size_t>(argv[4]);
-    size_t max_key = DB::parse<size_t>(argv[5]);
+    int max_key = DB::parse<int>(argv[5]);
 
     using Cache = ArrayCache<int, int>;
     Cache cache(cache_size);
@@ -60,7 +60,7 @@ int main(int argc, char ** argv)
         {
             pcg64 generator(randomSeed());
 
-            for (size_t j = 0; j < num_iterations; ++j)
+            for (int j = 0; j < num_iterations; ++j)
             {
                 size_t size = std::uniform_int_distribution<size_t>(1, region_max_size)(generator);
                 int key = std::uniform_int_distribution<int>(1, max_key)(generator);

src/Common/examples/average.cpp

@@ -425,7 +425,7 @@ Float NO_INLINE microsort(const PODArray<UInt8> & keys, const PODArray<Float> &
     for (size_t i = 1; i < HISTOGRAM_SIZE; ++i)
         positions[i] = positions[i - 1] + count[i - 1];
 
-    for (size_t i = 0; i < size; ++i)
+    for (UInt32 i = 0; i < size; ++i)
         *positions[keys[i]]++ = i;
 
     /// Update states.

src/IO/examples/valid_utf8_perf.cpp

@@ -10,7 +10,7 @@ int main(int argc, char ** argv)
     {
         int repeats = 1;
         if (argc >= 2)
-            repeats = std::stol(argv[1]);
+            repeats = static_cast<int>(std::stol(argv[1]));
 
         std::string text((std::istreambuf_iterator<char>(std::cin)),
                           std::istreambuf_iterator<char>());

src/IO/examples/zlib_ng_bug.cpp

@@ -23,9 +23,9 @@ int main(int, char **)
         throw std::runtime_error("Cannot deflateInit2");
 
     zstr.next_in = in.data();
-    zstr.avail_in = in.size();
+    zstr.avail_in = static_cast<int>(in.size());
     zstr.next_out = out.data();
-    zstr.avail_out = out.size();
+    zstr.avail_out = static_cast<int>(out.size());
 
     while (zstr.avail_in > 0)
         if (Z_OK != deflate(&zstr, Z_NO_FLUSH))

src/Interpreters/examples/hash_map_string_small.cpp

@@ -23,7 +23,7 @@
 
 struct SmallStringRef
 {
-    UInt32 size = 0;
+    size_t size = 0;
 
     union
     {

src/Storages/examples/merge_selector.cpp

@@ -66,7 +66,7 @@ int main(int, char **)
 
         size_t sum_merged_size = 0;
         size_t start_index = 0;
-        size_t max_level = 0;
+        unsigned max_level = 0;
         bool in_range = false;
 
         for (size_t i = 0, size = parts.size(); i < size; ++i)

src/Storages/examples/merge_selector2.cpp

@@ -72,7 +72,7 @@ int main(int, char **)
 
         size_t sum_merged_size = 0;
         size_t start_index = 0;
-        size_t max_level = 0;
+        unsigned max_level = 0;
         bool in_range = false;
 
         for (size_t i = 0, size = parts.size(); i < size; ++i)