Memory beats git bisect, but this was indeed fixed by
a1ddbdd3ef8b739aab53f20d6ed0a61c3474cf12.
On Saturday, July 5, 2025 at 6:36:57 PM UTC+2 Ian Lance Taylor wrote:
> On Sat, Jul 5, 2025 at 8:24 AM Ge <everg...@gmail.com> wrote:
> >
> > As follows showing, when `-N` is enabled with compiler, it gives the
> expected output.
> > ```
> > ➜ grd more nf2.go
> > package main
> >
> > import "os"
> >
> > func main() {
> > f, err := os.Open("nonExistFile")
> > fname := f.Name()
> > if err != nil {
> > println("failed to open file, Error:", err.Error())
> > return
> > }
> >
> > println("filename:", fname)
> > }
> > ➜ grd go run nf2.go
> > failed to open file, Error: open nonExistFile: no such file or directory
> >
> > ➜ grd go run -gcflags="-N" nf2.go
> > panic: runtime error: invalid memory address or nil pointer dereference
> > [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x4782e3]
> >
> > goroutine 1 [running]:
> > os.(*File).Name(...)
> > /usr/local/go/src/os/file.go:62
> > main.main()
> > /root/grd/nf2.go:7 +0x123
> > exit status 2
> >
> > ➜ grd go version
> > go version go1.24.4 linux/amd64
> > ```
>
> This may be https://go.dev/issue/72860. In any case, it works
> correctly (that is, it panics) on HEAD and the upcoming Go 1.25
> release.
>
> Ian
>
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