summaryrefslogblamecommitdiff
path: root/src/common/nullpo.hpp
blob: 2d8644fb4a849a666829754f789435235194cfdf (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
                                                

                  


                                                    




                                                                
 
                 
                               
                                                      
                   


                                   
 


                                        
                      

                                 
                                                             
                            
 
                    
/// return wrappers for unexpected NULL pointers
#ifndef NULLPO_HPP
#define NULLPO_HPP
/// Uncomment this to live dangerously
/// (really exist to detect mostly-unused variables)
//# define BUG_FREE

/// All functions print to standard error (was: standard output)
/// nullpo_ret(cond) - return 0 if given pointer is NULL
/// nullpo_retv(cond) - just return (function returns void)
/// nullpo_retr(rv, cond) - return given value instead

# ifndef BUG_FREE
#  define nullpo_retr(ret, t) \
    if (nullpo_chk(__FILE__, __LINE__, __func__, t)) \
        return ret;
# else // BUG_FREE
#  define nullpo_retr(ret, t) /*t*/
# endif // BUG_FREE

# define nullpo_ret(t) nullpo_retr(0, t)
# define nullpo_retv(t) nullpo_retr(, t)

# include "sanity.hpp"

/// Used by macros in this header
bool nullpo_chk(const char *file, int line, const char *func,
        const void *target);

#endif // NULLPO_HPP