C + + Library research notes-managing outdated Code with __ATTRIBUTE__ ((deprecated))

Managing outdated code with __ATTRIBUTE__ ((deprecated)), preserving compatible interfaces at the same time

Under Linux:

#define  depr_after __attribute__ ((deprecated)) #define  Depr_befor class depr_befor Aaa{}depr_after;int main ( int argc, char** argv) {    typedef float T;    AAA AA;    return 0;}

g++ Main.cpp-o Main

main.cpp:In function ' int main (int, char**) ':
Main.cpp:16:9: Warning: ' AAA ' is deprecated (declared at main.cpp:9) [-wdeprecated-declarations]

Under Windows:

for VCs. Similar as OPENCV definition:

#if defined __gnuc__    #define __CV_GPU_DEPR_BEFORE__    #define __CV_GPU_DEPR_AFTER__ __attribute__ (deprecated )) #elif defined (__msvc__)//| | Defined (__cudacc__)    #pragma deprecated (devmem2d_)    #define __CV_GPU_DEPR_BEFORE__ __declspec (deprecated)    #define __CV_GPU_DEPR_AFTER__#ELSE    #define __CV_GPU_DEPR_BEFORE__    #define __cv_gpu_depr_after__# endif

C + + Library research notes-managing outdated Code with __ATTRIBUTE__ ((deprecated))