/* Copyright (c) 1990 Regents of the University of California. All rights reserved. */ /* FUNCTION <>---macro for debugging diagnostics INDEX assert SYNOPSIS #include void assert(int <[expression]>); DESCRIPTION Use this macro to embed debuggging diagnostic statements in your programs. The argument <[expression]> should be an expression which evaluates to true (nonzero) when your program is working as you intended. When <[expression]> evaluates to false (zero), <> calls <>, after first printing a message showing what failed and where: . Assertion failed: <[expression]>, file <[filename]>, line <[lineno]>, function: <[func]> If the name of the current function is not known (for example, when using a C89 compiler that does not understand __func__), the function location is omitted. The macro is defined to permit you to turn off all uses of <> at compile time by defining <> as a preprocessor variable. If you do this, the <> macro expands to . (void(0)) RETURNS <> does not return a value. PORTABILITY The <> macro is required by ANSI, as is the behavior when <> is defined. Supporting OS subroutines required (only if enabled): <>, <>, <>, <>, <>, <>, <>, <>, <>. */ #include #include #include void __assert_no_args (void) { fprintf(stderr, "assertion failed\n"); abort(); }