cmd/compile: internal compiler error: Int64Val(10000000000000000000) (dev.regabi branch)

[zikaeroh]

What version of Go are you using (go version)?

$ go version
go version devel +8fc44cf0fa Sun Jan 3 19:48:20 2021 +0000 linux/amd64

Does this issue reproduce with the latest release?

No, only on the regabi branch.

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/jake/.cache/go-build"
GOENV="/home/jake/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/jake/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/jake/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/home/jake/zikaeroh/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/home/jake/zikaeroh/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/jake/decimal/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build867052434=/tmp/go-build -gno-record-gcc-switches"
GOROOT/bin/go version: go version devel +8fc44cf0fa Sun Jan 3 19:48:20 2021 +0000 linux/amd64
GOROOT/bin/go tool compile -V: compile version devel +8fc44cf0fa Sun Jan 3 19:48:20 2021 +0000
uname -sr: Linux 5.10.4-zen2-1-zen
/usr/lib/libc.so.6: GNU C Library (GNU libc) release release version 2.32.
gdb --version: GNU gdb (GDB) 10.1

What did you do?

Cloned https://github.com/ericlagergren/decimal, built the dev.regabi branch, and did a go build in the decimal checkout.

What did you expect to see?

No errors.

What did you see instead?

# github.com/ericlagergren/decimal/internal/arith
internal/arith/pow.go:65:17: internal compiler error: Int64Val(10000000000000000000)

goroutine 1 [running]:
runtime/debug.Stack(0xe8d1a0, 0xc00000e018, 0x0)
	/home/jake/zikaeroh/go/src/runtime/debug/stack.go:24 +0x9f
cmd/compile/internal/base.FatalfAt(0x4902000000080, 0xd5a11d, 0xc, 0xc0001055e8, 0x1, 0x1)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/base/print.go:227 +0x1b9
cmd/compile/internal/base.Fatalf(...)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/base/print.go:196
cmd/compile/internal/ir.Int64Val(0xe9bb50, 0xc000069c20, 0xde0b6b3a7640000)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/ir/val.go:137 +0x105
cmd/compile/internal/walk.(*exprSwitch).flush(0xc0004db540)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/walk/switch.go:207 +0x4fa
cmd/compile/internal/walk.(*exprSwitch).Emit(0xc0004db540, 0xc0005d5ae0)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/walk/switch.go:139 +0x2f
cmd/compile/internal/walk.walkSwitchExpr(0xc0005d5a80)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/walk/switch.go:106 +0x910
cmd/compile/internal/walk.walkSwitch(0xc0005d5a80)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/walk/switch.go:29 +0x46
cmd/compile/internal/walk.walkStmt(0xe9d8d8, 0xc0005d5a80, 0xe9c210, 0xc0005f4d90)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/walk/stmt.go:157 +0xc7a
cmd/compile/internal/walk.walkStmtList(0xc000081000, 0x31, 0x40)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/walk/stmt.go:172 +0x65
cmd/compile/internal/walk.Walk(0xc0004f4b40)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/walk/walk.go:44 +0xb3
cmd/compile/internal/gc.compile(0xc0004f4b40)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/gc/compile.go:65 +0x54
cmd/compile/internal/gc.funccompile(0xc0004f4b40)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/gc/compile.go:53 +0xc7
cmd/compile/internal/gc.Main(0xd7ed10)
	/home/jake/zikaeroh/go/src/cmd/compile/internal/gc/main.go:323 +0x115a
main.main()
	/home/jake/zikaeroh/go/src/cmd/compile/main.go:54 +0xb1

/cc @mdempsky

[zikaeroh]

Bisects to CL 272654 (unsurprising, I guess).

[gopherbot]

Change https://golang.org/cl/281272 mentions this issue: [dev.regabi] cmd/compile: fix ICE due to large uint64 constants

[zikaeroh]

Closing as fixed on dev.regabi (GitHub won't autoclose this until it's merged into master).