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Deflate: fix missing value in reset

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David 2023-10-17 14:46:47 -07:00 committed by GitHub
parent ad168db727
commit 364c54460f
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1 changed files with 30 additions and 0 deletions
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30
lib/std/compress/deflate/decompressor.zig
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@ -884,6 +884,7 @@ pub fn Decompressor(comptime ReaderType: type) type {
s.inner_reader = new_reader;
s.step = nextBlock;
s.err = null;
s.nb = 0;
s.dict.deinit();
try s.dict.init(s.allocator, max_match_offset, new_dict);
@ -898,6 +899,35 @@ const expectError = std.testing.expectError;
const io = std.io;
const testing = std.testing;
test "confirm decompressor resets" {
var compressed = std.ArrayList(u8).init(std.testing.allocator);
defer compressed.deinit();
inline for (.{
&[_]u8{ 0x5d, 0xc0, 0x21, 0x01, 0x00, 0x00, 0x00, 0x80, 0x20, 0xff, 0xaf, 0xa6, 0x4b, 0x03 },
&[_]u8{ 0x55, 0xc1, 0x41, 0x0d, 0x00, 0x00, 0x00, 0x02, 0xa1, 0x94, 0x96, 0x34, 0x25, 0xef, 0x1b, 0x5f, 0x01 },
}) |data| {
try compressed.writer().writeAll(data);
}
var stream = std.io.fixedBufferStream(compressed.items);
var decomp = try decompressor(std.testing.allocator, stream.reader(), null);
defer decomp.deinit();
while (true) {
if (try stream.getPos() == try stream.getEndPos()) break;
const buf = try decomp.reader().readAllAlloc(std.testing.allocator, 1024 * 100);
defer std.testing.allocator.free(buf);
if (decomp.close()) |err| {
return err;
}
try decomp.reset(stream.reader(), null);
}
}
test "truncated input" {
const TruncatedTest = struct {
input: []const u8,