bank: do not remove trailing 0 bytes from return data #33639
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## master #33639 +/- ##
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Coverage 81.8% 81.8%
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Files 806 806
Lines 217477 217473 -4
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+ Hits 177999 178006 +7
+ Misses 39478 39467 -11 |
This is creating havoc for Solang, as the return data is borsh encoded and therefore `u64` values like 0x100 get truncated.
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This change looks good to me. Since it only affects nodes that record return data, it shouldn't have any impact on consensus, which makes it safe as is.
I honestly can't remember why I thought this was a good idea. Maybe I thought everything was just arrays, so it's impossible to tell how much has been written. But when I look at the originating PR #23688, everything is Vec there too. So the truncation behavior is only destructive.
I also requested a review from @CriesofCarrots to double-check that this makes sense.
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Thank for the review @joncinque! How do you feel about merging it to |
I would prefer to keep it out of 1.16, since that's running mainnet. With 1.17, we give it some time to soak and let people adapt to the upcoming change. |
Makes sense. |
This is creating havoc for Solang, as the return data is borsh encoded and therefore `u64` values like 0x100 get truncated. (cherry picked from commit 4751199)
…t of #33639) (#33685) bank: do not remove trailing 0 bytes from return data (#33639) This is creating havoc for Solang, as the return data is borsh encoded and therefore `u64` values like 0x100 get truncated. (cherry picked from commit 4751199) Co-authored-by: Sean Young <[email protected]>
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Very happy to see this change, thank you @seanyoung :) |
This is creating havoc for Solang, as the return data is borsh encoded and therefore
u64values like 0x100 get truncated.Problem
When Solidity returns a borsh encoded return values which end in trailing zeros, then this gets mangled. For example,
a single
boolvaluefalseshould be a single 0 byte but this get removed.0x100u64has its last byte removed.Summary of Changes
Do not remove trailing 0 bytes. There is no need for this.
Fixes #31391