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Published 20 hours ago • verified publisher icon traefik

Cannot import google.golang.org/grpc

Open adegwerth opened this issue 1 year ago • 7 comments

The following program sample.go triggers an unexpected result

package main

import (
  "fmt"
  "google.golang.org/grpc"
  "google.golang.org/grpc/credentials/insecure"
)

func main() {
  fmt.Println("Hello")

  conn, err := grpc.Dial("localhost:5000", grpc.WithTransportCredentials(insecure.NewCredentials()))
  if err != nil {
    fmt.Println("did not connect: %v", err)
  }
  defer conn.Close()
	
  fmt.Println("Finished.")
}

Expected result

Hello
Finished.

Got

panic: runtime error: index out of range [1] with length 0 [recovered]
        panic: C:\Users\Andreas\go\src\google.golang.org\protobuf\reflect\protoreflect\value_union.go:192:9: CFG post-order panic: runtime error: index out of range [1] with length 0

goroutine 1 [running]:
github.com/traefik/yaegi/interp.(*Interpreter).cfg.func2.1()
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/cfg.go:536 +0x78
panic({0x15ff020, 0xc00186dba8})
        C:/Program Files/Go/src/runtime/panic.go:890 +0x262
github.com/traefik/yaegi/interp.(*itype).fieldSeq(0xc0011c6180?, {0xc0011c6180?, 0x1?, 0xc0010f8d80?})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/type.go:1602 +0x5e
github.com/traefik/yaegi/interp.(*Interpreter).cfg.func2(0xc0010f9d40)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/cfg.go:1785 +0x546c
github.com/traefik/yaegi/interp.(*node).Walk(0xc0010f9d40, 0xc000e98158, 0xc000e981a0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:291 +0xad
github.com/traefik/yaegi/interp.(*node).Walk(0xc0010f9c20, 0xc000e98158, 0xc000e981a0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc0010f9b00, 0xc000e98158, 0xc000e981a0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc0010f99e0, 0xc000e98158, 0xc000e981a0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc0010f8b40, 0xc000e98158, 0xc000e981a0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc000c3b680, 0xc000e98158, 0xc000e981a0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*Interpreter).cfg(0xc000374000, 0xc000c3b680, 0xc000e6b0e0, {0xc000644ac1, 0x2f}, {0xc000c42200, 0xc})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/cfg.go:62 +0x2b4
github.com/traefik/yaegi/interp.(*Interpreter).importSrc(0xc000374000, {0xc000644d80, 0x37}, {0xc000644ac1, 0x2f}, 0x1)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/src.go:125 +0x6d5
github.com/traefik/yaegi/interp.(*Interpreter).gta.func1(0xc000a79680)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:261 +0x2135
github.com/traefik/yaegi/interp.(*node).Walk(0xc000a79680, 0xc000e98ed0, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:284 +0x34
github.com/traefik/yaegi/interp.(*node).Walk(0xc000a78ea0, 0xc000e98ed0, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc000a78c60, 0xc000e98ed0, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*Interpreter).gta(0xc000374000, 0xc000a78c60, {0xc000644d80, 0x37}, {0xc000953f41, 0x37}, {0xc0007f61f0, 0xa})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:20 +0x22b
github.com/traefik/yaegi/interp.(*Interpreter).importSrc(0xc000374000, {0xc0002039b0, 0x2d}, {0xc000953f41, 0x37}, 0x1)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/src.go:108 +0x100f
github.com/traefik/yaegi/interp.(*Interpreter).gta.func1(0xc0007df680)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:261 +0x2135
github.com/traefik/yaegi/interp.(*node).Walk(0xc0007df680, 0xc000e99c18, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:284 +0x34
github.com/traefik/yaegi/interp.(*node).Walk(0xc0007df0e0, 0xc000e99c18, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc0007deea0, 0xc000e99c18, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*Interpreter).gta(0xc000374000, 0xc0007deea0, {0xc0002039b0, 0x2d}, {0xc000202d51, 0x2d}, {0xc00063cd40, 0x9})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:20 +0x22b
github.com/traefik/yaegi/interp.(*Interpreter).importSrc(0xc000374000, {0xc00009c700, 0x20}, {0xc000202d51, 0x2d}, 0x1)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/src.go:108 +0x100f
github.com/traefik/yaegi/interp.(*Interpreter).gta.func1(0xc0005666c0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:261 +0x2135
github.com/traefik/yaegi/interp.(*node).Walk(0xc0005666c0, 0xc000e9a960, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:284 +0x34
github.com/traefik/yaegi/interp.(*node).Walk(0xc000566120, 0xc000e9a960, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc000559e60, 0xc000e9a960, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*Interpreter).gta(0xc000374000, 0xc000559e60, {0xc00009c700, 0x20}, {0xc000202511, 0x20}, {0xc000038f90, 0x5})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:20 +0x22b
github.com/traefik/yaegi/interp.(*Interpreter).importSrc(0xc000374000, {0xc000202ab0, 0x22}, {0xc000202511, 0x20}, 0x1)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/src.go:108 +0x100f
github.com/traefik/yaegi/interp.(*Interpreter).gta.func1(0xc0004ea5a0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:261 +0x2135
github.com/traefik/yaegi/interp.(*node).Walk(0xc0004ea5a0, 0xc000e9b6a8, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:284 +0x34
github.com/traefik/yaegi/interp.(*node).Walk(0xc0004cbb00, 0xc000e9b6a8, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc0004cb8c0, 0xc000e9b6a8, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*Interpreter).gta(0xc000374000, 0xc0004cb8c0, {0xc000202ab0, 0x22}, {0xc000202ba1, 0x22}, {0xc0004c5fa0, 0xb})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:20 +0x22b
github.com/traefik/yaegi/interp.(*Interpreter).importSrc(0xc000374000, {0xc000203110, 0x28}, {0xc000202ba1, 0x22}, 0x1)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/src.go:108 +0x100f
github.com/traefik/yaegi/interp.(*Interpreter).gta.func1(0xc000861560)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:261 +0x2135
github.com/traefik/yaegi/interp.(*node).Walk(0xc000861560, 0xc000e9c3f0, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:284 +0x34
github.com/traefik/yaegi/interp.(*node).Walk(0xc000860900, 0xc000e9c3f0, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc0008606c0, 0xc000e9c3f0, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*Interpreter).gta(0xc000374000, 0xc0008606c0, {0xc000203110, 0x28}, {0xc000202751, 0x28}, {0xc000096a48, 0x8})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:20 +0x22b
github.com/traefik/yaegi/interp.(*Interpreter).importSrc(0xc000374000, {0xc00009c480, 0x1f}, {0xc000202751, 0x28}, 0x1)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/src.go:108 +0x100f
github.com/traefik/yaegi/interp.(*Interpreter).gta.func1(0xc0001ea000)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:261 +0x2135
github.com/traefik/yaegi/interp.(*node).Walk(0xc0001ea000, 0xc000e9d138, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:284 +0x34
github.com/traefik/yaegi/interp.(*node).Walk(0xc0001e1e60, 0xc000e9d138, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc0001e1c20, 0xc000e9d138, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*Interpreter).gta(0xc000374000, 0xc0001e1c20, {0xc00009c480, 0x1f}, {0xc0002021b1, 0x1f}, {0xc000096940, 0x8})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:20 +0x22b
github.com/traefik/yaegi/interp.(*Interpreter).importSrc(0xc000374000, {0xc00009c320, 0x1f}, {0xc0002021b1, 0x1f}, 0x1)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/src.go:108 +0x100f
github.com/traefik/yaegi/interp.(*Interpreter).gta.func1(0xc0001be240)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:261 +0x2135
github.com/traefik/yaegi/interp.(*node).Walk(0xc0001be240, 0xc000e9de80, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:284 +0x34
github.com/traefik/yaegi/interp.(*node).Walk(0xc0001a1560, 0xc000e9de80, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc0001a1320, 0xc000e9de80, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*Interpreter).gta(0xc000374000, 0xc0001a1320, {0xc00009c320, 0x1f}, {0xc00028fb91, 0x1f}, {0xc0000960e0, 0x8})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:20 +0x22b
github.com/traefik/yaegi/interp.(*Interpreter).importSrc(0xc000374000, {0xc000098030, 0x16}, {0xc00028fb91, 0x1f}, 0x1)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/src.go:108 +0x100f
github.com/traefik/yaegi/interp.(*Interpreter).gta.func1(0xc0004ec5a0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:261 +0x2135
github.com/traefik/yaegi/interp.(*node).Walk(0xc0004ec5a0, 0xc000e9ebc8, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:284 +0x34
github.com/traefik/yaegi/interp.(*node).Walk(0xc0004a5d40, 0xc000e9ebc8, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc0004a5b00, 0xc000e9ebc8, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*Interpreter).gta(0xc000374000, 0xc0004a5b00, {0xc000098030, 0x16}, {0xc0002901b1, 0x16}, {0xc000283348, 0x4})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:20 +0x22b
github.com/traefik/yaegi/interp.(*Interpreter).importSrc(0xc000374000, {0xc000282db0, 0x4}, {0xc0002901b1, 0x16}, 0x1)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/src.go:108 +0x100f
github.com/traefik/yaegi/interp.(*Interpreter).gta.func1(0xc000380fc0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:261 +0x2135
github.com/traefik/yaegi/interp.(*node).Walk(0xc000380fc0, 0xc000e9f910, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:284 +0x34
github.com/traefik/yaegi/interp.(*node).Walk(0xc000380c60, 0xc000e9f910, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*node).Walk(0xc000380a20, 0xc000e9f910, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:288 +0x75
github.com/traefik/yaegi/interp.(*Interpreter).gta(0xc000374000, 0xc000380a20, {0xc000282db0, 0x4}, {0xc000282db0, 0x4}, {0xc000282db0, 0x4})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:20 +0x22b
github.com/traefik/yaegi/interp.(*Interpreter).gtaRetry(0xc000374000?, {0xc000119af0?, 0xc000304180?, 0xc000119a38?}, {0xc000282db0, 0x4}, {0xc000282db0, 0x4})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/gta.go:383 +0x154
github.com/traefik/yaegi/interp.(*Interpreter).CompileAST(0xc000374000, {0x1837f48?, 0xc000304180?})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/program.go:87 +0x17f
github.com/traefik/yaegi/interp.(*Interpreter).compileSrc(0xc000374000, {0xc000372480?, 0x0?}, {0xc0000380c0?, 0xc000372480?}, 0x7d?)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/program.go:59 +0xb8
github.com/traefik/yaegi/interp.(*Interpreter).eval(0xc000374000, {0xc000372480?, 0x17d?}, {0xc0000380c0?, 0xc000372180?}, 0x7d?)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:552 +0x28
github.com/traefik/yaegi/interp.(*Interpreter).EvalPath(0xc000374000, {0xc0000380c0, 0xb})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/interp/interp.go:510 +0xab
main.runFile(0xc0000380c0?, {0xc0000380c0, 0xb}, 0x0)
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/cmd/yaegi/run.go:153 +0xee
main.run({0xc00006c050?, 0x2, 0x3})
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/cmd/yaegi/run.go:116 +0xbec
main.main()
        C:/Users/Andreas/go/pkg/mod/github.com/traefik/[email protected]/cmd/yaegi/yaegi.go:144 +0x2cb

Yaegi Version

0.14.2

Additional Notes

I call yaegi with the switch "--unsafe" (yaegi --unsafe ./sample.go)

adegwerth avatar Sep 26 '22 22:09 adegwerth

hi @mvertes , any updates on this sisue? I hit the same issue with protobuf

panic: /Users/xiaofan/code/plugin/src/github.com/xiaofan/milvus-cloud-plugin/vendor/google.golang.org/protobuf/reflect/protoreflect/value_union.go:191:9: CFG post-order panic: runtime error: index out of range [1] with length 0

xiaofan-luan avatar Oct 15 '22 13:10 xiaofan-luan

I'm on it.

First, it is necessary to add the a comment line // yaegi:tags purego at the start of the script, to skip dependencies in assembly, cgo, unsafe etc, mainly in protobuf (as far as I saw).

// yaegi:tags purego

package main

import (
[...]

Then there seems to be an issue related to interfaces that I think I can solve quickly. After that I see that grpc seems to rely extensively on reflect and that may cause some interferences with yaegi, but I'm not here yet.

mvertes avatar Oct 17 '22 08:10 mvertes

Same here with

package something

import (
    github.com/pascaldekloe/redis
)

darkweak avatar Oct 21 '22 21:10 darkweak

I'm on it.

First, it is necessary to add the a comment line // yaegi:tags purego at the start of the script, to skip dependencies in assembly, cgo, unsafe etc, mainly in protobuf (as far as I saw).

// yaegi:tags purego

package main

import (
[...]

Then there seems to be an issue related to interfaces that I think I can solve quickly. After that I see that grpc seems to rely extensively on reflect and that may cause some interferences with yaegi, but I'm not here yet.

Will keep following the updates since yaegi is still the best we can find to compile some plugins

xiaofan-luan avatar Oct 22 '22 05:10 xiaofan-luan