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Remove overflow opportunities (#13649)

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Tyera Eulberg 2020-11-17 12:01:11 -07:00 committed by GitHub
parent df1f53950e
commit a7bed62af0
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1 changed files with 2 additions and 2 deletions
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4
programs/stake/src/stake_state.rs
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@ -910,7 +910,7 @@ impl<'a> StakeAccount for KeyedAccount<'a> {
// verify full withdrawal can cover rent in new split account // verify full withdrawal can cover rent in new split account
|| (lamports < split_rent_exempt_reserve && lamports == self.lamports()?) || (lamports < split_rent_exempt_reserve && lamports == self.lamports()?)
// verify enough lamports left in previous stake and not full withdrawal // verify enough lamports left in previous stake and not full withdrawal
|| (lamports > self.lamports()? - meta.rent_exempt_reserve || (lamports + meta.rent_exempt_reserve > self.lamports()?
&& lamports != self.lamports()?) && lamports != self.lamports()?)
{ {
return Err(InstructionError::InsufficientFunds); return Err(InstructionError::InsufficientFunds);
@ -929,7 +929,7 @@ impl<'a> StakeAccount for KeyedAccount<'a> {
// account, this prevents any magic activation of stake by prefunding the // account, this prevents any magic activation of stake by prefunding the
// split account. // split account.
( (
lamports - meta.rent_exempt_reserve, lamports.saturating_sub(meta.rent_exempt_reserve),
lamports - split_rent_exempt_reserve, lamports - split_rent_exempt_reserve,
) )
} else { } else {