Problem with GC and address/leak sanitizer

[Luís Marques]

On Sunday, 16 February 2025 at 22:40:58 UTC, Luís Marques wrote:
> On Sunday, 16 February 2025 at 22:06:37 UTC, Johan wrote:
>> This used to work, but somehow does not work anymore since LDC 
>> 2.100 (I perhaps have forgotten about this and just noticed 
>> it). [2]
>>
>> You are very welcome to help investigate why it is no longer 
>> working!
>
> Sure, I'll have a look. Thanks.

I don't think this broke with the D 2.100. For instance, LDC 
1.29.0 is based on 2.099.1 and exhibits the same problem. Even 
older LDC versions don't trip on this exact program but they do 
output AddressSanitizer CHECK failures.

```
==4108825==AddressSanitizer CHECK failed: 
/home/vsts/work/1/s/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp:556 "((*tls_addr + *tls_size)) <= ((*stk_addr + *stk_size))" (0x78927e371080, 0x78927e371000)
```

I'll need some time to dig through the IR, the GC, etc. If you 
are going to look at this, please let me know, to avoid duplicate 
efforts.