CODEWITHSUNDEEP
cfunction
Lobster
Lobster

Reputation: 635

Functions with identical names in C

I am trying to compile old project, but I got an error. That project implements function dprintf, which is some kind of a printf function. However when I tried to compile that project today I found out that dprintf is already defined in stdio.h. So my question is - how to hide the standard dprintf function, because now I'm constantly getting an error like this: 

ntreg.c:82: error: conflicting types for 'dprintf'
/usr/include/stdio.h:397: note: previous declaration of 'dprintf' was here
ntreg.c:93: error: conflicting types for 'dprintf'
/usr/include/stdio.h:397: note: previous declaration of 'dprintf' was here

Upvotes: 0

Views: 423

Answers (2)

pmg
pmg

Reputation: 108978

dprintf() is not defined by the Standard.

If you configure your compiler for Standard C, the function should no longer be exposed

gcc -std=c99 -pedantic ...

Upvotes: 6

Iharob Al Asimi
Iharob Al Asimi

Reputation: 53006

Just rename your implementation to something else like

int dprintf(... parameters ...)

to

int not_stdio_dprintf(... parameters ...)

and then wherever you use it add

#define dprintf not_stdio_dprintf

Upvotes: 4

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