#35 maxint.c:37:5: warning: incompatible implicit declaration of built-in function 'printf'

[Dominique Michel]

On gentoo, gwc is working fine, but emerge issue a warning:

• QA Notice: Package triggers severe warnings which indicate that it
• may exhibit random runtime failures.
• maxint.c:37:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]