panic: runtime error: invalid memory address or nil pointer dereference

$ staticcheck -version
staticcheck 2026.2.1 (0.8.1)

package main

import "google.golang.org/protobuf/reflect/protopath"

func Walk(v protopath.Values) bool {
	return v.Values[0].Message() == nil
}

$ staticcheck .                                       
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x30 pc=0x7b5ed2]

goroutine 1035 [running]:
honnef.co/go/tools/go/ir.(*Function).Source(...)
        /home/ldez/sources/go/pkg/mod/honnef.co/go/[email protected]/go/ir/ssa.go:1979
honnef.co/go/tools/go/ir/irutil.isTrivial(0x3a72a16f4ee0?, 0x3a72a14b8c60?)
        /home/ldez/sources/go/pkg/mod/honnef.co/go/[email protected]/go/ir/irutil/stub.go:49 +0x12
honnef.co/go/tools/go/ir/irutil.IsTrivial(...)
        /home/ldez/sources/go/pkg/mod/honnef.co/go/[email protected]/go/ir/irutil/stub.go:45
honnef.co/go/tools/staticcheck/sa4023.run(0x3a72a16f4ee0)
        /home/ldez/sources/go/pkg/mod/honnef.co/go/[email protected]/staticcheck/sa4023/sa4023.go:192 +0x717
honnef.co/go/tools/lintcmd/runner.(*analyzerRunner).do(0x3a72a1316f00, {0xede138?, 0x3a72a1990500})
        /home/ldez/sources/go/pkg/mod/honnef.co/go/[email protected]/lintcmd/runner/runner.go:989 +0x722
honnef.co/go/tools/lintcmd/runner.genericHandle({0xede138, 0x3a72a1990500}, {0xede138?, 0x3a72a1b5e140?}, 0x3a72a20104d0, 0x3a72a12222b8, 0x3a72a29bcb90)
        /home/ldez/sources/go/pkg/mod/honnef.co/go/[email protected]/lintcmd/runner/runner.go:814 +0x111
created by honnef.co/go/tools/lintcmd/runner.(*subrunner).runAnalyzers in goroutine 946
        /home/ldez/sources/go/pkg/mod/honnef.co/go/[email protected]/lintcmd/runner/runner.go:1058 +0