ASSERT Section: Linux Programmer's Manual (3) Updated: April 4, 2025 Index   NAME assert - Abort the program if assertion is false.   SYNOPSIS #include <assert.h> void assert (int expression);   DESCRIPTION assert() prints an error message to standard output and terminates the program by calling abort() if expression is false (i.e., compares equal to zero). This only happens when the macro NDEBUG is undefined.   RETURN VALUE No value is returned.   CONFORMING TO ISO9899 (ANSI C)   BUGS assert() is implemented as a macro; if the expression tested has side - effects, program behaviour will be different depending on whether NDEBUG is defined. This may create Heisenbugs which go away when debugging is turned on.   SEE ALSO   Index NAME SYNOPSIS DESCRIPTION RETURN VALUE CONFORMING TO BUGS SEE ALSO This document was created by using the manual pages. Time: 11:58:02 GMT, March 24, 2025