How to solve Variadic Arguments issue (using C)

First of all, what are Variadic Arguments (VA)? It's a way to NOT define the number of arguments a function (or method) takes. You only define the args you definitely going to be given on every call. All additional arguments are then optional, but can be used if given.

While porting C-code from Linux to AS/400 I ran into a problem. This article is going to explain the issue and the solution.

The Issue

I have some code that

The Solution

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• Links
  • https://gcc.gnu.org/onlinedocs/cpp/Variadic-Macros.html GNU.org explaining VA