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std.fs.File: limit initial_cap according to max_bytes in readToEndAllocOptions

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Rui He 2025-01-30 23:42:15 +08:00 committed by GitHub
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commit c0d85cda53
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lib/std/fs/File.zig
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@ -1156,7 +1156,7 @@ pub fn readToEndAllocOptions(
// The file size returned by stat is used as hint to set the buffer
// size. If the reported size is zero, as it happens on Linux for files
// in /proc, a small buffer is allocated instead.
const initial_cap = (if (size > 0) size else 1024) + @intFromBool(optional_sentinel != null);
const initial_cap = @min((if (size > 0) size else 1024), max_bytes) + @intFromBool(optional_sentinel != null);
var array_list = try std.ArrayListAligned(u8, alignment).initCapacity(allocator, initial_cap);
defer array_list.deinit();