Error when trying to send very precise amount #18

1. 
   davout commented at 11:40 pm on January 2, 2011: none

   I generated block 100283 and collected a sub bitcent transaction fee. I get an “Insufficient funds” error when trying to send my exact balance to another address. It seems that there is either :

   • wrong behaviour (should send the amount), or
   • wrong error message, (the balance is ok but the client forbids me to send it)

   Block : 000000000003d014210dcffd602715545bce976f0f257d99279c83c2778e7150

   Here’s the trace

2. 
   davout commented at 11:43 pm on January 2, 2011: none

   Wow, I just sent 50 BTC, and now the client is reporting zero balance…
3. 
   gavinandresen commented at 5:37 pm on January 3, 2011: contributor

   What happened:

   Send 50.006… was rounded to 50.01 (amounts get rounded to two decimals). Causing insufficient funds message.

   Send 50 ran into special-case code for micropayments; if making change would result in less than 0.01 coins (which would trigger the you-must-pay-a-0.01-fee transaction spam prevention code), then the sub-cent amount is sent along as a transaction fee.

   At the very least, the RPC code should put the amount being sent in the insufficient funds message.

   Doing something more with sub-cent transactions needs more careful thought…

4. tcatm closed this on Mar 22, 2011

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Contributors
davout gavinandresen

Labels
Bug