fix: a few changes for 32-bit compatibility

Author: mhx

src/compression/brotli.cpp

@@ -668,7 +668,7 @@ class brotli_block_decompressor final : public block_decompressor_base {
         ::BrotliDecoderGetErrorCode(decoder_.get()));
   }
 
-  size_t const uncompressed_size_;
+  uint64_t const uncompressed_size_;
   uint8_t const* brotli_data_;
   size_t brotli_size_;
   std::unique_ptr<BrotliDecoderState, decltype(BrotliDecoderDestroyInstance)*>

src/compression/flac.cpp

@@ -489,7 +489,7 @@ class flac_block_decompressor final : public block_decompressor_base {
     return hdr;
   }
 
-  size_t const uncompressed_size_;
+  uint64_t const uncompressed_size_;
   thrift::compression::flac_block_header const header_;
   std::unique_ptr<dwarfs_flac_stream_decoder> decoder_;
 };

src/compression/ricepp.cpp

@@ -256,7 +256,7 @@ class ricepp_block_decompressor final : public block_decompressor_base {
     return hdr;
   }
 
-  size_t const uncompressed_size_;
+  uint64_t const uncompressed_size_;
   thrift::compression::ricepp_block_header const header_;
   std::span<uint8_t const> data_;
   std::unique_ptr<ricepp::decoder_interface<uint16_t>> decoder_;

test/block_cache_test.cpp

@@ -147,8 +147,8 @@ TEST_P(options_test, cache_stress) {
       auto iv = inodes[inode_dist(rng)];
       auto stat = fs.getattr(iv);
       if (stat.is_regular_file()) {
-        auto offset = rng() % stat.size();
-        auto size = rng() % (stat.size() - offset);
+        size_t offset = rng() % stat.size();
+        size_t size = rng() % (stat.size() - offset);
         reqs.push_back({iv, offset, size});
 
         while (reqs.size() < num_read_reqs &&