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#include <features.h> #undef assert #ifdef NDEBUG #define assert(x) (void)0 #else #define assert(x) ((void)((x) || (__assert_fail(#x, __FILE__, __LINE__, __func__),0))) #endif #ifdef __cplusplus extern "C" { #endif void __assert_fail (const char *, const char *, int, const char *); #ifdef __cplusplus } #endif