Index: ChangeLog

2005-01-24  Andrew Cagney  <cagney@gnu.org>

	* infrun.c (handle_inferior_event): Handle back-to-back and nested
	signals where the step_resume_breakpoint may have already been
	inserted.

Index: testsuite/ChangeLog
2005-01-24  Andrew Cagney  <cagney@gnu.org>

	* gdb.base/sigrepeat.exp, gdb.base/sigrepeat.c: New test.

1 files changed, 62 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/sigrepeat.exp b/gdb/testsuite/gdb.base/sigrepeat.exp
new file mode 100644
index 0000000..7abe68f
--- /dev/null
+++ b/gdb/testsuite/gdb.base/sigrepeat.exp
@@ -0,0 +1,62 @@
+# Copyright 2004, 2005 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 of the License, 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 program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  
+
+
+# The program sigrepeat.c creates a repeating timer and then waits for
+# it to fire multiple times.  The objective is to create a backlog if
+# sigalrm signals and hence cause repeated signal delivery without any
+# cpu advancment.
+
+if [target_info exists gdb,nosignals] {
+    verbose "Skipping sigstep.exp because of nosignals."
+    continue
+}
+
+if $tracelevel then {
+    strace $tracelevel
+}
+
+set prms_id 0
+set bug_id 0
+
+set testfile sigrepeat
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
+    untested "Couldn't compile ${module}.c"
+    return -1
+}
+
+# get things started
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load ${binfile}
+
+# Advance to main
+if { ![runto_main] } then {
+    gdb_suppress_tests;
+}
+
+# Run to the signal handler wait loop.
+set infinite_loop [gdb_get_line_number {infinite loop}]
+gdb_test "advance $infinite_loop" "" "advance to infinite loop"
+
+# Make the first of many signals come pending
+sleep 1
+
+# Try to step off this line
+gdb_test "next" "return 0;.*"