panic: runtime error: when export genesis for aleth without precompile-addresses

[hadv]

Hi there,

please note that this is an issue tracker reserved for bug reports and feature requests.

For general questions please use the gitter channel or the Ethereum stack exchange at https://ethereum.stackexchange.com.

System information

Geth version: geth 1.8.20
OS & Version: Windows/Linux/OSX
Commit hash : (if develop)

Expected behaviour

Can export *-aleth.json*-parity.json*-harmony.json genesis files even without precompile-addresses

Actual behaviour

Cannot export because panic error in export *-aleth.json file

Steps to reproduce the behaviour

export genesis json file without precompile-addresses

Backtrace

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x444945a]

goroutine 1 [running]:
main.(*alethGenesisSpec).setPrecompile(...)
	/Users/hadv/go/src/github.com/hadv/go-ethereum/build/_workspace/src/github.com/ethereum/go-ethereum/cmd/puppeth/genesis.go:177
main.newAlethGenesisSpec(0xc000192020, 0x7, 0xc0001cc000, 0x2, 0x2, 0xc0000001a4)
	/Users/hadv/go/src/github.com/hadv/go-ethereum/build/_workspace/src/github.com/ethereum/go-ethereum/cmd/puppeth/genesis.go:150 +0x79a
main.(*wizard).manageGenesis(0xc0000e2100)
	/Users/hadv/go/src/github.com/hadv/go-ethereum/build/_workspace/src/github.com/ethereum/go-ethereum/cmd/puppeth/wizard_genesis.go:251 +0x8de
main.(*wizard).run(0xc0000e2100)
	/Users/hadv/go/src/github.com/hadv/go-ethereum/build/_workspace/src/github.com/ethereum/go-ethereum/cmd/puppeth/wizard_intro.go:149 +0x818
main.runWizard(0xc0001069a0, 0x3, 0x4a2c9e0)
	/Users/hadv/go/src/github.com/hadv/go-ethereum/build/_workspace/src/github.com/ethereum/go-ethereum/cmd/puppeth/puppeth.go:63 +0xfc
github.com/ethereum/go-ethereum/vendor/gopkg.in/urfave/cli%2ev1.HandleAction(0x44eefe0, 0x45d11e8, 0xc0001069a0, 0xc0000808a0, 0x0)
	/Users/hadv/go/src/github.com/hadv/go-ethereum/build/_workspace/src/github.com/ethereum/go-ethereum/vendor/gopkg.in/urfave/cli.v1/app.go:490 +0xc8
github.com/ethereum/go-ethereum/vendor/gopkg.in/urfave/cli%2ev1.(*App).Run(0xc00009b040, 0xc00008c1a0, 0x1, 0x1, 0x0, 0x0)
	/Users/hadv/go/src/github.com/hadv/go-ethereum/build/_workspace/src/github.com/ethereum/go-ethereum/vendor/gopkg.in/urfave/cli.v1/app.go:264 +0x59d
main.main()
	/Users/hadv/go/src/github.com/hadv/go-ethereum/build/_workspace/src/github.com/ethereum/go-ethereum/cmd/puppeth/puppeth.go:54 +0x24b

[holiman]

Seems to be fixed with #18344