a short null dereference story

[Walter Bright]

On 12/5/2025 12:58 PM, Basile B. wrote:
> So for D the equivalent would be to generate a check on each DotVarExp.

```d
struct S { int a; }

int main()
{
     S* s = null;
     return s.a;
}
```

compile:

dmd test.d -g

run:

gdb test
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Reading symbols from test...done.
(gdb) run
Starting program: /home/walter/forks/dmd/compiler/src/bug2/test
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
D main () at ./test.d:8
8           return s.a;