alt Hacker NewsYou will typically find bugs go up when you do not use auto in most average C++ code bases because, as noted by another comment, a lot of C++ developers have the bad habit of writing uninitialized variables, which auto prevents.
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adrianN • yesterday at 9:33 AM
Automatic conversion between numeric types is also a fun source of bugs.
As a C developer to me uninitialized variables are a feature and I love to invoke UB with __builtin_unreachable, because it makes the compiler able to actually bark at me on incorrect usage instead of it silently working.