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fix(rdb): incorrect type conversion during RDB loads the int8 encoding #2547

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merged 4 commits into from
Sep 21, 2024
Merged

fix(rdb): incorrect type conversion during RDB loads the int8 encoding #2547

merged 4 commits into from
Sep 21, 2024

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fstd2
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@fstd2 fstd2 commented Sep 20, 2024

Resolve #2546

@fstd2 fstd2 mentioned this pull request Sep 20, 2024
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torwig
torwig reviewed Sep 20, 2024
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src/storage/rdb.cc
@@ -157,7 +157,7 @@ StatusOr<std::string> RDB::loadEncodedString() {
unsigned char buf[4] = {0};
if (len == RDBEncInt8) {
auto next = GET_OR_RET(stream_->ReadByte());
return std::to_string(static_cast<int>(next));
return std::to_string(static_cast<int8_t>(next));
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Why int if the length is 8?

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@torwig torwig Sep 20, 2024 •
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Did you try uint8_t? However, I'm not sure that it's the right type.

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It should be correct to use int8_t here since the encoding is int8. Cast it to int will drop the sign bit.

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@fstd2 It would be great if you could add a Go test case to prevent breaking in the future.

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fstd2 commented Sep 20, 2024

@fstd2 It would be great if you could add a Go test case to prevent breaking in the future.

I'm a beginner, don't know how to do..

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@fstd2 No worry, I will do this later if you don't know how to. Thank you!

@git-hulk git-hulk changed the title fix(rdb): handle RDBEncInt8 type conversion correctly during RDB loadEncodedString fix(rdb): incorrect type conversion during RDB loads the int8 encoding Sep 21, 2024
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sonarcloud bot commented Sep 21, 2024

Quality Gate Failed Quality Gate failed

Failed conditions
45.9% Coverage on New Code (required ≥ 50%)

See analysis details on SonarCloud

@git-hulk git-hulk merged commit 8c42aa0 into apache:unstable Sep 21, 2024
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@torwig torwig torwig left review comments

@PragmaTwice PragmaTwice PragmaTwice approved these changes

@git-hulk git-hulk git-hulk approved these changes

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Successfully merging this pull request may close these issues.

Inconsistent behavior when using RESTORE with dumped negative integers
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@fstd2 @git-hulk @torwig @PragmaTwice