newlib-cygwin/newlib/libc/stdlib/assert.c

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/*
FUNCTION
2005-10-28 Bob Wilson <bob.wilson@acm.org> * libc/misc/unctrl.c: Replace FUNCTION description. * libc/signal/signal.c: Remove documentation for raise and _raise_r. * libc/stdio/getdelim.c: Fix spelling errors. * libc/stdio/getw.c: Put RETURNS on a separate line. Fix punctuation. * libc/stdio/putw.c: Likewise. * libc/stdlib/a64l.c: Fix formatting, spelling and punctuation in documentation. * libc/stdlib/assert.c: Do not capitalize FUNCTION description. * libc/stdlib/efgcvt.c: Add spaces to FUNCTION description. * libc/stdlib/envlock.c: Use em-dash in FUNCTION description. * libc/stdlib/mlock.c: Likewise. * libc/stdlib/mstats.c: Likewise. * libc/time/tzlock.c: Likewise. * libc/stdlib/rand.c: Use "multi-threaded" and "thread-safe" in NOTES. * libc/stdlib/rand48.c: Remove extra space in FUNCTION description and hyphenate "pseudo-random". * libc/string/bcmp.c: Remove extra blank lines in documentation. * libc/string/strncat.c: Likewise. * libc/string/memchr.c: Remove extra ">" character in documentation. * libc/string/strcspn.c: Use "characters" instead of "chars". * libc/string/strpbrk.c: Likewise. * libc/string/strerror_r.c: Capitalize "GNU". * libc/string/strnlen.c: Likewise. * libc/string/strtok.c: Fix formatting, spelling and punctuation in documentation. Use "multi-threaded" and "thread-safe" in NOTES. * libc/string/wcscat.c: Split PORTABILITY into two paragraphs. * libc/string/wcschr.c: Likewise. * libc/string/wcscmp.c: Likewise. * libc/string/wcscpy.c: Likewise. * libc/string/wcscspn.c: Likewise. * libc/string/wcslen.c: Likewise. * libc/string/wcsncat.c: Likewise. * libc/string/wcsncmp.c: Likewise. * libc/string/wcsncpy.c: Likewise. * libc/string/wcsnlen.c: Likewise. * libc/string/wcspbrk.c: Likewise. * libc/string/wcsrchr.c: Likewise. * libc/string/wcsspn.c: Likewise. * libc/string/wmemchr.c: Likewise. * libc/string/wmemcmp.c: Likewise. * libc/string/wmemcpy.c: Likewise. * libc/string/wmemset.c: Likewise. * libc/string/wmemmove.c: Likewise. Also fix FUNCTION description. * libc/string/wcswidth.c: Formatting and punctuation in documentation. * libc/string/wcwidth.c: Likewise. * libm/common/s_modf.c: Remove extra period from documentation. * libm/math/s_isnan.c: Fix formatting, grammar and punctuation in documentation. * libm/mathfp/s_isnan.c: Likewise. * libm/math/s_ldexp.c: Fix punctuation. * libm/mathfp/s_ldexp.c: Likewise. * libm/math/w_log.c: Likewise. * libm/mathfp/s_logarithm.c: Likewise. * libm/math/w_j0.c: Add spaces to FUNCTION description. * libm/mathfp/w_jn.c: Likewise.
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<<assert>>---macro for debugging diagnostics
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INDEX
assert
ANSI_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.
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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. */
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void
_DEFUN (__assert_func, (file, line, func, failedexpr),
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const char *file _AND
int line _AND
const char *func _AND
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const char *failedexpr)
{
fiprintf(stderr,
"assertion \"%s\" failed: file \"%s\", line %d%s%s\n",
failedexpr, file, line,
func ? ", function: " : "", func ? func : "");
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abort();
/* NOTREACHED */
}
#endif /* HAVE_ASSERT_FUNC */
void
_DEFUN (__assert, (file, line, failedexpr),
const char *file _AND
int line _AND
const char *failedexpr)
{
__assert_func (file, line, NULL, failedexpr);
/* NOTREACHED */
}