AssertWarn

Debugging macro that prints a warning if an expression evaluates to 0.

Syntax
   #define AssertWarn(expression) If (expression) = 0 Then : fb_AssertWarn( 
   __FILE__, __LINE__, __FUNCTION__, #expression ) : End If

Usage
   AssertWarn( expression )

Parameters
   expression
      Any valid expression.  If expression evaluates to 0, a warning 
      message is printed to stderr (console).

Description
   The AssertWarn macro is intended for use in debugging and works only if 
   the -g option is selected in the FBC command line. In this case it 
   prints a warning message if expression evaluates to 0. It doesn't stop 
   the program execution like Assert does.

   Its normal use is to check the correct value of the variables during 
   debugging.

   If -g is not passed to fbc, the macro does not generate any code.

Example
   Sub foo
     Dim a As Integer
     a=0
     AssertWarn(a=1)
   End Sub

   foo 

   '' If -g is used this code prints: test.bas(3): assertion failed at FOO: a=1 

Dialect Differences
   * Not available in the -lang qb dialect unless referenced with the 
     alias __ASSERTWARN.

Differences from QB
   * New to FreeBASIC

See also
   * Assert

