Which D compiler is the most maintained and future-proof? [DMD GDC and LDC]

[IchorDev]

On Monday, 24 July 2023 at 13:30:27 UTC, cc wrote:
>
> Is there any list of known significant "gotchas" with moving to 
> LDC from DMD?  Any unexpected surprises to watch out for or be 
> careful for?  I'm thinking of all the "features" of DMD that 
> are now considered verboten by many users (e.g. compiling with 
> -release, disabling of asserts or array bounds checking, etc).  
> Known edge cases of compiler optimization causing different 
> behavior between vendors?

Some LDC stuff: 
https://wiki.dlang.org/LDC-specific_language_changes#Violations_of_the_specification
Pretty much everything for GDC: 
https://gcc.gnu.org/onlinedocs/gdc/Missing-Features.html