-
Only the debugging version of the program can set breakpoints, single-step execution, debug output statements using TRACE/ASSERT, and so on. Release does not contain any debugging information, so it is small and fast.
All these assertions are compiled only in the debug version and ignored in the release version. The only exception is VERIFY (). In fact, these macros all call assert () function, but attach some debugging code related to the library. If you add any program code to these macros, not just boolean expressions (such as assignment, function call that can change the value of variables, etc. ), the release version will not perform these operations, resulting in an error. Novices are prone to make such mistakes, and the search method is simple because these macros are listed above. Just use the find in files function of VC++ to find the places where these macros are used in all engineering files, and then check them one by one. In addition, some experts may add conditional compilation such as #ifdef _DEBUG, so be careful.