source: trunk/libs/newlib/src/newlib/libc/stdlib/assert.c @ 444

/*
FUNCTION
<<assert>>---macro for debugging diagnostics

INDEX
        assert

SYNOPSIS
        #include <assert.h>
        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), <<assert>>
        calls <<abort>>, 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
        <<assert>> at compile time by defining <<NDEBUG>> as a
        preprocessor variable.   If you do this, the <<assert>> macro
        expands to

. (void(0))

RETURNS
        <<assert>> does not return a value.

PORTABILITY
        The <<assert>> macro is required by ANSI, as is the behavior
        when <<NDEBUG>> is defined.

Supporting OS subroutines required (only if enabled): <<close>>, <<fstat>>,
<<getpid>>, <<isatty>>, <<kill>>, <<lseek>>, <<read>>, <<sbrk>>, <<write>>.
*/

#include <assert.h>
#include <stdlib.h>
#include <stdio.h>

#ifndef HAVE_ASSERT_FUNC
/* func can be NULL, in which case no function information is given.  */
void
__assert_func (const char *file,
        int line,
        const char *func,
        const char *failedexpr)
{
  fiprintf(stderr,
           "assertion \"%s\" failed: file \"%s\", line %d%s%s\n",
           failedexpr, file, line,
           func ? ", function: " : "", func ? func : "");
  abort();
  /* NOTREACHED */
}
#endif /* HAVE_ASSERT_FUNC */

void
__assert (const char *file,
        int line,
        const char *failedexpr)
{
   __assert_func (file, line, NULL, failedexpr);
  /* NOTREACHED */
}