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There are C compilers for many architectures that the Rust compiler (today) does not support. They may also be referring to the fact that you can't just drop it

There are C compilers for many architectures that the Rust compiler (today) does not support. They may also be referring to the fact that you can't just drop it into existing projects with their complicated build systems in the same way that you can drop a few generated ".c" and ".h"files.

yaantc 9y ago
Great points, plus from the puff readme: "In Rust, integer overflow is checked at run time in debug mode and silently ignored in release mode by default, as the run time performance penalty was deemed too great.". With puff, it's statically checked. I haven't delved into puff's details, but to support as many environment as possible in an easy way today, a DSL generating C seems a pragmatic decision.
- steveklabnik 9y ago
  Small note here, we left the spec broad enough that if the runtime checks get cheap enough, we can do them in release mode as well.
- tveita 9y ago
  By default, but it is possible to enable integer overflow for release builds with "-C overflow-checks".
  - lossolo 9y ago
    But it's about checking it compile time because of overhead not at runtime.
  - nigeltao 9y ago
    And that comes with a performance penalty. Maybe it won't, in a future version of Rust, but it does for now.