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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /assert
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initial import
Diffstat (limited to 'assert')
-rw-r--r--assert/Makefile26
-rw-r--r--assert/assert-perr.c55
-rw-r--r--assert/assert.c83
-rw-r--r--assert/assert.h98
4 files changed, 262 insertions, 0 deletions
diff --git a/assert/Makefile b/assert/Makefile
new file mode 100644
index 0000000000..76b75bb2f8
--- /dev/null
+++ b/assert/Makefile
@@ -0,0 +1,26 @@
+# Copyright (C) 1991, 1994 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Library General Public License as
+# published by the Free Software Foundation; either version 2 of the
+# License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Library General Public License for more details.
+
+# You should have received a copy of the GNU Library General Public
+# License along with the GNU C Library; see the file COPYING.LIB.  If
+# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+# Cambridge, MA 02139, USA.
+
+#
+#	Sub-makefile for assert portion of the library.
+#
+subdir	:= assert
+
+routines := assert assert-perr
+
+include ../Rules
diff --git a/assert/assert-perr.c b/assert/assert-perr.c
new file mode 100644
index 0000000000..b0436ad575
--- /dev/null
+++ b/assert/assert-perr.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+#include <sysdep.h>
+
+
+extern const char *__assert_program_name; /* In assert.c.  */
+
+/* This function, when passed an error number, a filename, and a line
+   number, prints a message on the standard error stream of the form:
+   	a.c:10: foobar: Unexpected error: Computer bought the farm
+   It then aborts program execution via a call to `abort'.  */
+
+#ifdef FATAL_PREPARE_INCLUDE
+#include FATAL_PREPARE_INCLUDE
+#endif
+
+void
+__assert_perror_fail (int errnum,
+		      const char *file, unsigned int line,
+		      const char *function)
+{
+#ifdef FATAL_PREPARE
+  FATAL_PREPARE;
+#endif
+
+  /* Print the message.  */
+  (void) fprintf (stderr, "%s%s%s:%u: %s%sUnexpected error: %s.\n",
+		  __assert_program_name ? __assert_program_name : "",
+		  __assert_program_name ? ": " : "",
+		  file, line,
+		  function ? function : "", function ? ": " : "",
+		  strerror (errnum));
+  (void) fflush (stderr);
+
+  abort ();
+}
diff --git a/assert/assert.c b/assert/assert.c
new file mode 100644
index 0000000000..9da9e22be4
--- /dev/null
+++ b/assert/assert.c
@@ -0,0 +1,83 @@
+/* Copyright (C) 1991, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sysdep.h>
+
+
+CONST char *__assert_program_name;
+
+/* This function, when passed a string containing an asserted
+   expression, a filename, and a line number, prints a message
+   on the standard error stream of the form:
+   	a.c:10: foobar: Assertion `a == b' failed.
+   It then aborts program execution via a call to `abort'.  */
+
+#ifdef FATAL_PREPARE_INCLUDE
+#include FATAL_PREPARE_INCLUDE
+#endif
+
+void
+DEFUN(__assert_fail, (assertion, file, line, function),
+      CONST char *assertion AND
+      CONST char *file AND unsigned int line AND CONST char *function)      
+{
+#ifdef FATAL_PREPARE
+  FATAL_PREPARE;
+#endif
+
+  /* Print the message.  */
+  (void) fprintf (stderr, "%s%s%s:%u: %s%sAssertion `%s' failed.\n",
+		  __assert_program_name ? __assert_program_name : "",
+		  __assert_program_name ? ": " : "",
+		  file, line,
+		  function ? function : "", function ? ": " : "",
+		  assertion);
+  (void) fflush (stderr);
+
+  abort ();
+}
+
+#ifdef	HAVE_GNU_LD
+
+#include <string.h>
+
+static void
+DEFUN(set_progname, (argc, argv, envp),
+      int argc AND char **argv AND char **envp)
+{
+  char *p;
+
+  if (argv && argv[0])
+    {
+      p = strrchr (argv[0], '/');
+      if (p == NULL)
+	__assert_program_name = argv[0];
+      else
+	__assert_program_name = p + 1;
+    }
+
+  (void) &set_progname;		/* Avoid "defined but not used" warning.  */
+}
+
+text_set_element (__libc_subinit, set_progname);
+
+#endif
diff --git a/assert/assert.h b/assert/assert.h
new file mode 100644
index 0000000000..7f7fc7f733
--- /dev/null
+++ b/assert/assert.h
@@ -0,0 +1,98 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/*
+ *	ANSI Standard: 4.2 DIAGNOSTICS	<assert.h>
+ */
+
+#ifdef	_ASSERT_H
+
+#undef	_ASSERT_H
+#undef	assert
+
+#endif /* assert.h	*/
+
+#define	_ASSERT_H	1
+#include <features.h>
+
+/* void assert (int expression);
+
+   If NDEBUG is defined, do nothing.
+   If not, and EXPRESSION is zero, print an error message and abort.  */
+
+#ifdef	NDEBUG
+
+#define	assert(expr)		((void) 0)
+
+/* void assert_perror (int errnum);
+
+   If NDEBUG is defined, do nothing.  If not, and ERRNUM is not zero, print an
+   error message with the error text for ERRNUM and abort.
+   (This is a GNU extension.) */
+
+#ifdef	__USE_GNU
+#define	assert_perror(errnum)	((void) 0)
+#endif
+
+#else /* Not NDEBUG.  */
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+/* This prints an "Assertion failed" message and aborts.  */
+extern void __assert_fail __P ((__const char *__assertion,
+				__const char *__file,
+				unsigned int __line,
+				__const char *__function))
+     __attribute__ ((__noreturn__));
+
+/* Likewise, but prints the error text for ERRNUM.  */
+extern void __assert_perror_fail __P ((int __errnum,
+				       __const char *__file,
+				       unsigned int __line,
+				       __const char *__function))
+     __attribute__ ((__noreturn__));
+
+__END_DECLS
+
+#define	assert(expr)							      \
+  ((void) ((expr) ||							      \
+	   (__assert_fail (__STRING(expr),				      \
+			   __FILE__, __LINE__, __ASSERT_FUNCTION), 0)))
+
+#ifdef	__USE_GNU
+#define assert_perror(errnum)						      \
+  ((void) ((errnum) && (__assert_perror_fail ((errnum),			      \
+					      __FILE__, __LINE__,	      \
+					      __ASSERT_FUNCTION), 0)))
+#endif
+
+/* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
+   which contains the name of the function currently being defined.
+   This is broken in G++ before version 2.6.  */
+#if (!defined (__GNUC__) || __GNUC__ < 2 || \
+     __GNUC_MINOR__ < (defined (__cplusplus) ? 6 : 4))
+#define __ASSERT_FUNCTION	((__const char *) 0)
+#else
+#define __ASSERT_FUNCTION	__PRETTY_FUNCTION__
+#endif
+
+
+#endif /* NDEBUG.  */
+