[cfe-dev] Why clang needs to fork into itself?

[Eric Christopher]

It makes the error reporting a bit easier for catching problems that
cause assertions, etc.

-eric

On Mon, Jan 27, 2014 at 12:02 PM, Yuri <yuri at rawbw.com> wrote:
> I noticed that even the simple command 'clang -c -emit-llvm c.cpp' calls
> fork, and forks into itself.
> Why does it need to do this? This would potentially complicate profiling,
> debugging, etc. All tools should be fork-aware.
> Also unnecessary operation must cause some performance hit.
>
> It is understandable when compiler would, for example, fork into an external
> macro preprocessor, or assembler, or linker, but why into itself?
>
> Yuri
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