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toplev.c (pipe_closed): Delete. 

* toplev.c (pipe_closed): Delete.
	(crash_signal): New.  Generate ICE for a fatal signal.
	(float_signal): Call crash_signal outside a float-handler
	block, not abort.
	(main): Install crash_signal as handler for core-dumping signals.

	* cp/decl.c: Remove all signal handling code, now done in toplev.c.

From-SVN: r35247
This commit is contained in:
Zack Weinberg 2000-07-25 19:01:33 +00:00 committed by Zack Weinberg
parent cccf3bdc5c
commit a7023245ce
4 changed files with 39 additions and 63 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2000-07-25 Zack Weinberg <zack@wolery.cumb.org>
* toplev.c (pipe_closed): Delete.
(crash_signal): New. Generate ICE for a fatal signal.
(float_signal): Call crash_signal outside a float-handler
block, not abort.
(main): Install crash_signal as handler for core-dumping signals.
2000-07-25 David Edelsohn <edelsohn@gnu.org>
* rs6000.c (print_operand, case 'T'): New case.

4
gcc/cp/ChangeLog
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@ -1,3 +1,7 @@
2000-07-25 Zack Weinberg <zack@wolery.cumb.org>
* decl.c: Remove all signal handling code, now done in toplev.c.
2000-07-23 Mark Mitchell <mark@codesourcery.com>
* decl.c (make_rtl_for_nonlocal_decl): Rework.

54
gcc/cp/decl.c
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@ -37,7 +37,6 @@ Boston, MA 02111-1307, USA. */
#include "cp-tree.h"
#include "decl.h"
#include "lex.h"
#include <signal.h>
#include "defaults.h"
#include "output.h"
#include "except.h"
@ -105,7 +104,6 @@ static void suspend_binding_level PARAMS ((void));
static void resume_binding_level PARAMS ((struct binding_level *));
static struct binding_level *make_binding_level PARAMS ((void));
static void declare_namespace_level PARAMS ((void));
static void signal_catch PARAMS ((int)) ATTRIBUTE_NORETURN;
static int decl_jump_unsafe PARAMS ((tree));
static void storedecls PARAMS ((tree));
static void require_complete_types_for_parms PARAMS ((tree));
@ -6096,36 +6094,6 @@ end_only_namespace_names ()
only_namespace_names = 0;
}
/* Arrange for the user to get a source line number, even when the
compiler is going down in flames, so that she at least has a
chance of working around problems in the compiler. We used to
call error(), but that let the segmentation fault continue
through; now, it's much more passive by asking them to send the
maintainers mail about the problem. */
static void
signal_catch (sig)
int sig;
{
signal (SIGSEGV, SIG_DFL);
#ifdef SIGIOT
signal (SIGIOT, SIG_DFL);
#endif
#ifdef SIGILL
signal (SIGILL, SIG_DFL);
#endif
#ifdef SIGABRT
signal (SIGABRT, SIG_DFL);
#endif
#ifdef SIGBUS
signal (SIGBUS, SIG_DFL);
#endif
fatal ("Internal error: %s\n\
Please submit a full bug report.\n\
See %s for instructions.", strsignal (sig), GCCBUGURL);
}
/* Push the declarations of builtin types into the namespace.
RID_INDEX, if < CP_RID_MAX is the index of the builtin type
in the array RID_POINTERS. NAME is the name used when looking
@ -6334,28 +6302,6 @@ init_decl_processing ()
current_binding_level = NULL_BINDING_LEVEL;
free_binding_level = NULL_BINDING_LEVEL;
/* Because most segmentation signals can be traced back into user
code, catch them and at least give the user a chance of working
around compiler bugs. */
signal (SIGSEGV, signal_catch);
/* We will also catch aborts in the back-end through signal_catch and
give the user a chance to see where the error might be, and to defeat
aborts in the back-end when there have been errors previously in their
code. */
#ifdef SIGIOT
signal (SIGIOT, signal_catch);
#endif
#ifdef SIGILL
signal (SIGILL, signal_catch);
#endif
#ifdef SIGABRT
signal (SIGABRT, signal_catch);
#endif
#ifdef SIGBUS
signal (SIGBUS, signal_catch);
#endif
build_common_tree_nodes (flag_signed_char);
error_mark_list = build_tree_list (error_mark_node, error_mark_node);

36
gcc/toplev.c
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@ -160,7 +160,7 @@ static void set_target_switch PARAMS ((const char *));
static const char *decl_name PARAMS ((tree, int));
static void float_signal PARAMS ((int)) ATTRIBUTE_NORETURN;
static void pipe_closed PARAMS ((int)) ATTRIBUTE_NORETURN;
static void crash_signal PARAMS ((int)) ATTRIBUTE_NORETURN;
#ifdef ASM_IDENTIFY_LANGUAGE
/* This might or might not be used in ASM_IDENTIFY_LANGUAGE. */
static void output_lang_identify PARAMS ((FILE *)) ATTRIBUTE_UNUSED;
@ -1543,7 +1543,7 @@ float_signal (signo)
int signo ATTRIBUTE_UNUSED;
{
if (float_handled == 0)
abort ();
crash_signal (signo);
#if defined (USG) || defined (hpux)
signal (SIGFPE, float_signal); /* re-enable the signal catcher */
#endif
@ -1629,14 +1629,17 @@ pop_float_handler (handled, handler)
bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
}
/* Handler for SIGPIPE. */
/* Handler for fatal signals, such as SIGSEGV. These are transformed
into ICE messages, which is much more user friendly. */
static void
pipe_closed (signo)
crash_signal (signo)
/* If this is missing, some compilers complain. */
int signo ATTRIBUTE_UNUSED;
int signo;
{
fatal ("output pipe has been closed");
fatal ("Internal error: %s.\n\
Please submit a full bug report.\n\
See %s for instructions.", strsignal (signo), GCCBUGURL);
}
/* Strip off a legitimate source ending from the input string NAME of
@ -4431,12 +4434,27 @@ main (argc, argv)
(void) bindtextdomain (PACKAGE, localedir);
(void) textdomain (PACKAGE);
/* Install handler for SIGFPE, which may be received while we do
compile-time floating point arithmetic. */
signal (SIGFPE, float_signal);
#ifdef SIGPIPE
signal (SIGPIPE, pipe_closed);
/* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */
#ifdef SIGSEGV
signal (SIGSEGV, crash_signal);
#endif
#ifdef SIGILL
signal (SIGILL, crash_signal);
#endif
#ifdef SIGBUS
signal (SIGBUS, crash_signal);
#endif
#ifdef SIGABRT
signal (SIGABRT, crash_signal);
#endif
#if defined SIGIOT && (!defined SIGABRT || SIGABRT != SIGIOT)
signal (SIGIOT, crash_signal);
#endif
decl_printable_name = decl_name;
lang_expand_expr = (lang_expand_expr_t) do_abort;