gcc has this capability: http://gcc.gnu.org/onlinedocs/gcc/Diagnostic-Pragmas.html http://gcc.gnu.org/onlinedocs/gcc/Diagnostic-Pragmas.html I recon you meant

gcc has this capability: http://gcc.gnu.org/onlinedocs/gcc/Diagnostic-Pragmas.html http://gcc.gnu.org/onlinedocs/gcc/Diagnostic-Pragmas.html I recon you meant unused variables (as assinging an unitialized variable to itself would beat the purpose) you can use __attribute__((unused)) on it - normally #defined to a macro.