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guile/libguile/error.h
Jim Blandy 3323ad081e Give GCC more control flow information, so it can be sure that
variables aren't used uninitialized.
* error.h (scm_error, scm_syserror, scm_syserror_msg,
scm_sysmissing, scm_num_overflow, scm_out_of_range,
scm_wrong_num_args, scm_wrong_type_arg, scm_memory_error,
scm_misc_error): Tell GCC that these functions never return.
* struct.c (scm_struct_ref, scm_struct_set_x): If we can't figure
out the field type, call abort if SCM_ASSERT returns, to placate
the optimizer.
* stacks.c (scm_make_stack, scm_last_stack_frame): abort if
scm_wta ever returns.  We can't handle this case anyway, and this
gives the optimizer more information.
* unif.c (scm_uniform_vector_ref, scm_array_set_x): Abort if
scm_wta ever returns.
1996-12-18 21:39:44 +00:00

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/* classes: h_files */
#ifndef ERRORH
#define ERRORH
/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*/
#include "libguile/__scm.h"
extern int scm_ints_disabled;
/* GCC can be told that a function doesn't return; this helps it do
better error checking (for uninitialized variable use, for
example), and some optimization. */
#ifdef __GNUC__
#define SCM_NORETURN __attribute__ ((noreturn))
#else
#define SCM_NORETURN
#endif
extern SCM scm_errno SCM_P ((SCM arg));
extern SCM scm_perror SCM_P ((SCM arg));
extern void scm_error SCM_P ((SCM key, char *subr, char *message,
SCM args, SCM rest)) SCM_NORETURN;
extern void (*scm_error_callback) SCM_P ((SCM key, char *subr,
char *message, SCM args, SCM rest));
extern void scm_syserror SCM_P ((char *subr)) SCM_NORETURN;
extern void scm_syserror_msg SCM_P ((char *subr, char *message, SCM args))
SCM_NORETURN;
extern void scm_sysmissing SCM_P ((char *subr)) SCM_NORETURN;
extern void scm_num_overflow SCM_P ((char *subr)) SCM_NORETURN;
extern void scm_out_of_range SCM_P ((char *subr, SCM bad_value)) SCM_NORETURN;
extern void scm_wrong_num_args SCM_P ((SCM proc)) SCM_NORETURN;
extern void scm_wrong_type_arg SCM_P ((char *subr, int pos, SCM bad_value))
SCM_NORETURN;
extern void scm_memory_error SCM_P ((char *subr)) SCM_NORETURN;
extern void scm_misc_error SCM_P ((char *subr, char *message, SCM args))
SCM_NORETURN;
extern SCM scm_wta SCM_P ((SCM arg, char *pos, char *s_subr));
extern void scm_init_error SCM_P ((void));
#endif /* ERRORH */