Re: Fetch function names & prototypes?

19 Oct 2005 02:37:10 -0400

          From comp.compilers

Related articles
Fetch function names & prototypes? (2005-10-17)
Re: Fetch function names & prototypes? (TOUATI Sid) (2005-10-19)
| List of all articles for this month |

From: TOUATI Sid <>
Newsgroups: comp.compilers
Date: 19 Oct 2005 02:37:10 -0400
Organization: Universite de Versailles Saint-Quentin-en-Yvelines
References: 05-10-103
Keywords: linker, types
Posted-Date: 19 Oct 2005 02:37:10 EDT

> Thanks.
> [Of course it's possible to construct a symbol table of functions,
> although in C++ the prototypes are found in the header files included
> by each module so there's no need. There's also an old trick: encode
> the argument types of each function as a byte string, put the byte
> string into the object file symbol table, and have the linker compare
> those byte strings and complain if they don't match. The linker doesn't
> have to understand the types, just see if they match. -John]

The question is how do you encode the types. My intuition is that this
trick would not allow a perfect/accurate type checking. If types are
simple (say scalars), this trick would work. But if the function
arguments have complex data types, this would produce wrong type
[It's basically the same trick as C++ name mangling, represent the type
as a coded token string. If it's a complex type, the string may get long
but that's not a problem. I first saw this in the Dartmouth PL/I compiler
circa 1976, and it worked well. -John]

Post a followup to this message

Return to the comp.compilers page.
Search the comp.compilers archives again.