Niklaus wrote:
Hi, Like the #undef for macros , do we have a way for undefining a library function like say memset. Do we have any way(like linker) so that my function memset(with different arguments) are used everywhere instead of library function memset. One way would be to rename my function memset to mymemset or #define it . But i want to know whether there is any hack or anything so that the library is included but the memset used is mine instead of the library version.
Do you have an example where #undef doesn't accomplish what you want? Evidently, many standard C functions will have macro replacements in the standard headers used in your implementation. C standard requires ability to put those aside with #undef and to have an underlying separate library implementation, which you could attempt to preempt with your own version. It's common practice for compilers to #define memset() to a special library version, but not with changes in the meaning of arguments. If your own version is not functionally compatible with the standard version, you are inviting trouble by using the standard name.
