Thank you for the fast response, George. I can confirm that I can call all 
three functions without errors now and this patch fixes the errors I 
encountered.

Am 19. April 2024 12:50:35 MESZ schrieb George Dunlap <george.dun...@cloud.com>:
>In a handful of cases, it was decided to return a pointer to a
>structure rather than the plain structure itself, due to the size.
>However, in these cases the structure was never allocated, leading to
>a nil pointer exception when calling the relevant `fromC` method.
>
>Allocate structures before attempting to fill them in.
>
>Reported-by: Tobias Fitschen <tobias.fitsc...@posteo.de>
>Signed-off-by: George Dunlap <george.dun...@cloud.com>
>---
>This has been compile-tested only; Tobias, I'd appreciate a test if you get a 
>chance.
>
>CC: Nick Rosbrook <rosbro...@gmail.com>
>CC: Anthony PERARD <anthony.per...@citrix.com>
>---
> tools/golang/xenlight/xenlight.go | 3 +++
> 1 file changed, 3 insertions(+)
>
>diff --git a/tools/golang/xenlight/xenlight.go 
>b/tools/golang/xenlight/xenlight.go
>index a45c636952..d793f172e5 100644
>--- a/tools/golang/xenlight/xenlight.go
>+++ b/tools/golang/xenlight/xenlight.go
>@@ -999,6 +999,7 @@ func (ctx *Context) GetPhysinfo() (physinfo *Physinfo, err 
>error) {
>               err = Error(ret)
>               return
>       }
>+      physinfo = &Physinfo{}
>       err = physinfo.fromC(&cphys)
> 
>       return
>@@ -1010,6 +1011,7 @@ func (ctx *Context) GetVersionInfo() (info *VersionInfo, 
>err error) {
> 
>       cinfo = C.libxl_get_version_info(ctx.ctx)
> 
>+      info = &VersionInfo{}
>       err = info.fromC(cinfo)
> 
>       return
>@@ -1027,6 +1029,7 @@ func (ctx *Context) DomainInfo(Id Domid) (di *Dominfo, 
>err error) {
>               return
>       }
> 
>+      di = &Dominfo{}
>       err = di.fromC(&cdi)
> 
>       return
>-- 
>2.25.1
>

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