Nil Pointer Dereference Error When Declaring Duplicate Functions in Main and Test File of the Same Package

[notJoon]

Description

When the same function is declared in both the main source and test file within the same package, a nil pointer dereference error occurs instead of the expected redclared in this block error.

Reproduction Code

// foo/a.gno
package foo

func Add(a, b int) int {
    return add2(a, b)
}

func add2(a, b int) int {
    return a + b
}

// foo/a_test.gno
package foo

import (
    "testing"
)

func TestFoo(t *testing.T) {
    a := 1
    b := 2

    if Add(a, b) != 3 {
        t.Errorf("Add(%d, %d) = %d, want %d", a, b, Add(a, b), a+b)
    }
}

func add2(a, b int) int {
    return a + b
}

Current Output

examples/gno.land/p/demo/foo: test pkg: panic: runtime error: invalid memory address or nil pointer dereference
--- preprocess stack ---
stack 1: file{ package foo; import testing; func TestFoo(t *(testing<VPUverse(0)>.T)) { a<VPUverse(0)> := 1; b<VPUverse(0)> := 2; if Add<VPUverse(0)>(a<VPUverse(0)>, b<VPUverse(0)>) != 3 { t<VPUverse(0)>.Errorf("Add(%d, %d) = %d, want %d", a<VPUverse(0)>, b<VPUverse(0)>, Add<VPUverse(0)>(a<VPUverse(0)>, b<VPUverse(0)>), a<VPUverse(0)> + b<VPUverse(0)>) } }; func add2(a int<VPUverse(0)>, b int<VPUverse(0)>)  int<VPUverse(0)> { return a<VPUverse(0)> + b<VPUverse(0)> } }
stack 0: package(foo)
------------------------
stack:
goroutine 1 [running]:
runtime/debug.Stack()
        /Users/not_joon/go/pkg/mod/golang.org/[email protected]/src/runtime/debug/stack.go:24 +0x64
main.runTestFiles.func1()
        /Users/not_joon/gno-core/gnovm/cmd/gno/test.go:445 +0x48
panic({0x100fe0680?, 0x14009ad4cc0?})
        /Users/not_joon/go/pkg/mod/golang.org/[email protected]/src/runtime/panic.go:770 +0x124
github.com/gnolang/gno/gnovm/pkg/gnolang.initStaticBlocks.func1.1()
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/preprocess.go:137 +0x290
panic({0x100fc3b40?, 0x101714510?})
        /Users/not_joon/go/pkg/mod/golang.org/[email protected]/src/runtime/panic.go:770 +0x124
github.com/gnolang/gno/gnovm/pkg/gnolang.(*StaticBlock).Define2(0x1400042c930, 0x0, {0x140004135a4, 0x4}, {0x0, 0x0}, {{0x0, 0x0}, {0x0, 0x0}, ...})
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/nodes.go:1825 +0x508
github.com/gnolang/gno/gnovm/pkg/gnolang.(*StaticBlock).Predefine(...)
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/nodes.go:1787
github.com/gnolang/gno/gnovm/pkg/gnolang.initStaticBlocks.func1({0x14000143200?, 0x14000143200?, 0x2?}, 0x20?, 0x101054e46?, {0x1010e1d00, 0x14000428c08}, 0x8?)
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/preprocess.go:214 +0x394
github.com/gnolang/gno/gnovm/pkg/gnolang.transcribe(0x14008519280, {0x14000143200, 0x1, 0x20}, 0x4d, 0x2, {0x1010e1d00, 0x14000428c08}, 0x14008518f6f)
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/transcribe.go:140 +0x74
github.com/gnolang/gno/gnovm/pkg/gnolang.transcribe(0x14008519280, {0x14000143200, 0x0, 0x20}, 0x0, 0x0, {0x1010e1e68, 0x1400042cc08}, 0x140085191e7)
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/transcribe.go:717 +0x2c6c
github.com/gnolang/gno/gnovm/pkg/gnolang.Transcribe({0x1010e1e68, 0x1400042cc08}, 0x140003a5280)
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/transcribe.go:133 +0xb4
github.com/gnolang/gno/gnovm/pkg/gnolang.initStaticBlocks({0x1010ee508, 0x1400010db80}, {0x1010ec6b0, 0x1400042c908}, {0x1010ec8e0, 0x1400042cc08})
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/preprocess.go:117 +0x13c
github.com/gnolang/gno/gnovm/pkg/gnolang.PredefineFileSet({0x1010ee508, 0x1400010db80}, 0x1400042c908, 0x1400000c258)
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/preprocess.go:27 +0x98
github.com/gnolang/gno/gnovm/pkg/gnolang.(*Machine).runFileDecls(0x14000033688, {0x140000746d0, 0x1, 0x1})
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/machine.go:626 +0x1c8
github.com/gnolang/gno/gnovm/pkg/gnolang.(*Machine).RunFiles(0x14000033688, {0x140000746d0?, 0x1000158?, 0x101d23dd8?})
        /Users/not_joon/gno-core/gnovm/pkg/gnolang/machine.go:584 +0x30
main.runTestFiles(0x14000033688, 0x1400000cc00, {0x140004134d7, 0x3}, 0x1, 0x0, {0x0, 0x0}, {0x1010e5ff0, 0x14000415090}, ...)
        /Users/not_joon/gno-core/gnovm/cmd/gno/test.go:464 +0x194
main.gnoTestPkg({0x16f98f6a4, 0x1c}, {0x1400040e560?, 0x1, 0x14?}, {0x0, 0x0, 0xe71e6eb300000000?}, 0x1400016d6c0, {0x1010e5ff0, ...})
        /Users/not_joon/gno-core/gnovm/cmd/gno/test.go:311 +0xf44
main.execTest(0x1400016d6c0, {0x1400040e540?, 0x1?, 0x1?}, {0x1010e5ff0, 0x14000415090})
        /Users/not_joon/gno-core/gnovm/cmd/gno/test.go:205 +0x35c
main.newTestCmd.func1({0x0?, 0x140000300f0?}, {0x1400040e540?, 0x14000110d20?, 0x0?})
        /Users/not_joon/gno-core/gnovm/cmd/gno/test.go:99 +0x3c
github.com/gnolang/gno/tm2/pkg/commands.(*Command).Run(0x14000392d10?, {0x1010d8fd0?, 0x1017b6540?})
        /Users/not_joon/gno-core/tm2/pkg/commands/command.go:255 +0x17c
github.com/gnolang/gno/tm2/pkg/commands.(*Command).Run(0x14000392d10?, {0x1010d8fd0?, 0x1017b6540?})
        /Users/not_joon/gno-core/tm2/pkg/commands/command.go:259 +0x12c
github.com/gnolang/gno/tm2/pkg/commands.(*Command).ParseAndRun(0x14000392d10, {0x1010d8fd0, 0x1017b6540}, {0x140000300d0?, 0x14000393290?, 0x14000393340?})
        /Users/not_joon/gno-core/tm2/pkg/commands/command.go:140 +0x4c
github.com/gnolang/gno/tm2/pkg/commands.(*Command).Execute(0x1010e5ff0?, {0x1010d8fd0?, 0x1017b6540?}, {0x140000300d0?, 0x1016d1ef8?, 0x140000021c0?})
        /Users/not_joon/gno-core/tm2/pkg/commands/command.go:117 +0x28
main.main()
        /Users/not_joon/gno-core/gnovm/cmd/gno/main.go:13 +0x6c

gno machine: Machine:
    CheckTypes: false
    Op: []
    Values: (len: 0)
    Exprs:
    Stmts:
    Blocks:
          @(33) gno.land/p/demo/foo
    Blocks (other):
    Frames:
    Exceptions:

FAIL
FAIL    examples/gno.land/p/demo/foo    0.89s
FAIL
FAIL
FAIL: 0 build errors, 1 test errors

Expected Output

add2 redeclared in this block