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system_program: Make insufficient tokens message more helpful #1936

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Nov 28, 2018
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5 changes: 4 additions & 1 deletion src/system_program.rs
Original file line number Diff line number Diff line change
Expand Up @@ -60,7 +60,10 @@ pub fn process_instruction(
Err(Error::InvalidArgument)?;
}
if tokens > accounts[0].tokens {
info!("Insufficient tokens in account[0]");
info!(
"Insufficient tokens in account[0] ({} > {})",
tokens, accounts[0].tokens
);
Err(Error::ResultWithNegativeTokens)?;
}
accounts[0].tokens -= tokens;
Expand Down