Cannot refund GasConsumed - tx times out

[albertchon]

Summary of Bug

Empirically, I've found that when the entire gas consumed is refunded, the tx will timeout. However if one refunds a smaller value up to the gas consumed in the handler execution, the tx will succeed.

// always times out
ctx.GasMeter().RefundGas(ctx.GasMeter().GasConsumed(), "test")

// succeeds
// beginning of handler
startGas := ctx.GasMeter().GasConsumed()
...
ctx.GasMeter().RefundGas(ctx.GasMeter().GasConsumed() - startGas, "test")

Version

v0.44.0

Also previously noted this observation here #9403 (comment)

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[alexanderbez]

the tx will timeout while one refunds a smaller value up to the gas consumed in the handler execution, it'll succeed.

I don't understand this :-/

@fedekunze can you add to anything here pls?

[albertchon]

Edited grammar in OP to make it more clear. Basically one cannot refund the gas consumed in the antehandler.

[robert-zaremba]

Isn't this duplicating / extending #2150?

[robert-zaremba]

Isn't this duplicating / extending #2150?

hmm, it's not related.

[robert-zaremba]

@albertchon would you be able to provide a test case (as a pr)?