Re: Writing a compiler

On Sun, 2 Nov 2008 16:34:44 +0000 (UTC), Marco van de Voort
<marcov@stack.nl> wrote:


>On 2008-11-01, Louis Krupp <lkrupp@pssw.nospam.com.invalid> wrote:
>>> [cfront was a prototype, and it's a miracle it worked as well as it did.
>>> If you want to see generated code, either get the Comeau compiler, or look
>>> at the assembler output from something like GCC. -John]
>>
>> Look up "name mangling." It's as ugly as it sounds, but as far as I
>> know, it's how all C++ compilers manage scoping and overloading.
>>
>> I see no reason why cfront couldn't implement all of C++;
>> theoretically, there's no difference between generating C or assembler
>> code.
>
>This is not true if e.g. all chars that can be used in C identifiers are
>also valid chars in C++. In assembler, usually a lot more special chars ($,@
>often) can be used to separate the parts in a mangled name.


That doesn't matter. The standard does not specify how to mangle
names and, in fact, nearly every compiler does it differently. As
long as the C compiler can handle long identifiers, the names can be
mangled by any suitable convention.


George

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