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diff --git a/other-licenses/snappy/src/snappy.h b/other-licenses/snappy/src/snappy.h
--- a/other-licenses/snappy/src/snappy.h
+++ b/other-licenses/snappy/src/snappy.h
@@ -60,17 +60,17 @@ namespace snappy {
// 9 in the future.
// If you played with other compression algorithms, level 1 is equivalent to
// fast mode (level 1) of LZ4, level 2 is equivalent to LZ4's level 2 mode
// and compresses somewhere around zstd:-3 and zstd:-2 but generally with
// faster decompression speeds than snappy:1 and zstd:-3.
int level = DefaultCompressionLevel();
constexpr CompressionOptions() = default;
- constexpr CompressionOptions(int compression_level)
+ constexpr explicit CompressionOptions(int compression_level)
: level(compression_level) {}
static constexpr int MinCompressionLevel() { return 1; }
static constexpr int MaxCompressionLevel() { return 2; }
static constexpr int DefaultCompressionLevel() { return 1; }
};
// ------------------------------------------------------------------------
// Generic compression/decompression routines.
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