ASSERT that works on Release mode too?

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Where can I find an ASSERT similar to the assert(...) macro from the standard C++ library (the one defined in <cassert>), but that works on Release mode too? Or how should I write one?

I like assert(...) because it automatically prints the line my source file where the assertion failed, as well as the assertion expression. I expect those features (if possible) in the Release mode ASSERT as well.

Basically assert is a macro that evaluates the expression and if it fails prints something and then aborts. It's not that hard to write something similar, something like.

#define ASSERT(x) do { if( !(x) ) { printfunc( #x ); abort(); } while(0)

Then you can modify that in order to suit your requirements. For example you might want not to abort in release mode. You could also adjust your printouts (to include just the information that you think is useful), in order to get file and line information you would use __FILE__ and __LINE__ macros (btw the #x in the define expands to a string literal containing the expression x).

Is assert(false) ignored in release mode?, The classic assert is a tool from the old standard C library, not from C++. For debugging that is probably ok, since the one who runs the program and It's part of what separates a debug build from a release build, and by  Now you know that there are no guarantees that debug code works in release mode. If you're like me you've probably discovered this after months of development without ever building or testing a Release Mode version. This leads to our first rule: Rule 1: Always regularly test both the Debug and Release mode versions of your applications frequently.

In your release build, don't define NDEBUG, and assert will work.

Assertions in C/C++, Problem In Visual C++, assertions are disabled in Release mode and and would like assertions to be invoked during Release mode too. Then, you can use assume() for lightweight hints to the optimizer in release mode, and assert() for heavyweight documentation of invariants and bug-catching in debug mode. Compare the following function with and without the assume(), on GCC 4.6+ or Clang 3.5:

You can undefine NDEBUG

#undef NDEBUG

near the assert statement

or you can define your own assert

#define assert(x) printf(...)

Difference between DEBUG and NDEBUG? - C / C++, You can write your own: Hide Copy Code. #define MY_ASSERT(f) (void) ((f) || !​MyAssertFailedLine(__FILE__, __LINE__)) BOOL  There's a rather strong convention from other languages that the thing called assert is for debugging and should be compiled out in release mode. There's at least four or so prior issues/prs discussing a release-mode version of something like assert.

I've rolled out my own assertions that always fire in release mode too, based on this article:

This is the GIST of it, with me not providing the actual implementation (of AbstractAsserter, which is based on the article), but you get the idea:

#include <iostream>

struct AbstractAsserter
    virtual void doAssert(const char* expr, const char* file, int line, const char* function) const
        std::cout << "Asserting now at " << expr << ", " << file << ", " << line << ", " << function << std::endl;

struct Local
  const char* function_;
  const char* expr_;
  const char* file_;
  int line_;
  Local( const char* f, const char* ex, const char* file, int line )
  : function_( f ), expr_( ex ), file_( file ), line_( line )
  { }
  Local operator << ( const AbstractAsserter& impl )
    impl.doAssert( expr_, file_, line_, function_ );
    return *this;

// More to be added as required...
#if defined( __GNUC__ )
#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901)
# define WE_FUNCTION __func__
# define WE_FUNCTION "null_func()"

#define WE_ASSERT( expr )\
  if( expr );\
  else Local( WE_FUNCTION, #expr, __FILE__, __LINE__ )\
    << AbstractAsserter();

int main() {
    WE_ASSERT(!"bad BAD BOY!");
    return 0;

With this structure, your implementation may also do some critical saving of state etc (if you deem your program state trustworthy...debatable).

Should there be assertions in release builds, We've been introducing asserts in the code for a while. know if it's been previously discussed, but I think we should talk about enabling asserts in release mode too. Asserts state assumptions about how the code works. Public Shared Sub MyMethod(type As Type, baseType As Type) Debug.Assert(Not (type Is Nothing), "Type parameter is null") End Sub Remarks. By default, the Debug.Assert method works only in debug builds. Use the Trace.Assert method if you want to do assertions in release builds.

Visual C++: Assert in Release Mode – Code Yarns ‍ , According to Searle and Vanderveken, there are assertives that differ from assertion for the more specific character of their mode of achievement: these too are  We would like to show you a description here but the site won’t allow us.

How can I get a assert() like debug in release mode?, Assert method if you want to do assertions in release builds. When the application runs in user-interface mode, it displays a message box that shows the call  At the default Release mode setting, Single Frame, you get one picture each time you press the shutter button. In other words, this is normal-photography mode. The only other thing you need to know is that you must press the shutter button in two stages for autoexposure and autofocusing to work correctly: Press the button halfway, pause to let

Enable asserts on release build? · Issue #1905 · neovim/neovim , When you build a release version of your app – i.e., when you ship your app to the App Store – Xcode Here's a very basic example: If your app works great with assertions on – things that literally make your app crash if things are wrong  Assertion failed: expression, file filename, line line number This macro is disabled if, at the moment of including <assert.h> , a macro with the name NDEBUG has already been defined. This allows for a coder to include as many assert calls as needed in a source code while debugging the program and then disable all of them for the production

The Oxford Handbook of Assertion, API documentation for the Rust `assert` macro in crate `std`. Assertions are always checked in both debug and release builds, and cannot be disabled. given. assert!(true); fn some_computation() -> bool { true } // a very simple function assert! Accepted types are: fn , mod , struct , enum , trait , type , macro , and const . During development, you are highly encouraged to use Flutter’s debug mode. This is the default if you use bug icon in Android Studio, or flutter run at the command line. Some tools support assert statements through the command-line flag --enable-asserts. In this mode, Dart assert statements are enabled, and the Flutter framework evaluates the

  • Just do not define NDEBUG and standard assert would work
  • @Lol4t0 But that won't mess with other compiler optimizations in Release mode?
  • At least it is intended and documented behavior (
  • If I #undef NDEBUG, that won't mess with other compiler optimizations in Release mode?
  • See what-is-the-ndebug-preprocessor-macro-used-for-on-different-platforms. In short NDEBUG is only used to disable assert.
  • You probably have to undefine NDEBUG before including cassert.
  • If I #undef NDEBUG, that won't mess with other compiler optimizations in Release mode?