[New test] breakpoints on consecutive instructions

[Michael Snyder <msnyder at cygnus dot com>]

I'd like to submit this test for stepping over breakpoints on
consecutive instructions.  This would detect a failure that I
am about to submit a fix for.
2001-06-28  Michael Snyder  <msnyder@redhat.com>

	* gdb.base/consecutive.exp: New file.  Test stepping over
	breakpoints on consecutive instructions.
	* gdb.base/consecutive.c: New file.

*** /dev/null	Thu Aug 24 02:00:32 2000
--- consecutive.exp	Thu Jun 28 11:30:53 2001
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*** 0 ****
--- 1,111 ----
+ #   Copyright 2001
+ #   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.  
+ 
+ # Please email any bugs, comments, and/or additions to this file to:
+ # bug-gdb@prep.ai.mit.edu
+ 
+ # This file was written by Michael Snyder. (msnyder@redhat.com)
+ 
+ if $tracelevel then {
+     strace $tracelevel
+ }
+ 
+ #
+ # Test breakpoints at consecutive instruction addresses.
+ #
+ 
+ set prms_id 0
+ set bug_id 0
+ 
+ set testfile "consecutive"
+ set srcfile ${testfile}.c
+ set binfile ${objdir}/${subdir}/${testfile}
+ 
+ if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-w}] != "" } {
+     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
+ }
+ 
+ if [get_compiler_info ${binfile}] {
+     return -1
+ }
+ 
+ gdb_exit
+ gdb_start
+ gdb_reinitialize_dir $srcdir/$subdir
+ gdb_load ${binfile}
+ 
+ if [target_info exists gdb_stub] {
+     gdb_step_for_stub;
+ }
+ 
+ if ![runto_main] then {
+     perror "couldn't run to breakpoint"
+     continue
+ }
+ 
+ set nl "\[\r\n\]+"
+ 
+ gdb_breakpoint foo
+ gdb_test "continue" "Breakpoint $decimal, foo .*" \
+ 	"continue to breakpoint in foo"
+ 
+ set bp_addr 0
+ set stop_addr 0
+ 
+ send_gdb "x /2i \$pc\n"
+ gdb_expect {
+     global hex
+     global nl
+     global bp_addr
+     global gdb_prompt
+ 
+     -re "$hex.*${nl}($hex).*$gdb_prompt $" {
+ 	set bp_addr $expect_out(1,string)
+ 	pass "get breakpoint address for foo"
+     }
+     -re ".*$gdb_prompt $" {
+ 	fail "get breakpoint address for foo"
+ 	return 0;
+     }
+     timeout {
+ 	fail "get breakpoint address for foo (timeout)"
+ 	return 0;
+     }
+ }
+ 
+ gdb_test "break \*$bp_addr" "Breakpoint $decimal at $bp_addr: file .*" \
+ 	"set bp, 2nd instr"
+ 
+ send_gdb "step\n"
+ gdb_expect {
+     -re "Breakpoint $decimal, ($hex) in foo.*$gdb_prompt $" {
+ 	set stop_addr $expect_out(1,string)
+ 	if [eval expr "$bp_addr == $stop_addr"] then {
+ 	    pass "stopped at bp, 2nd instr"
+ 	} else {
+ 	    fail "stopped at bp, 2nd instr (wrong address)"
+ 	}
+     }
+     -re ".*$gdb_prompt $" {
+ 	fail "stopped at bp, 2nd instr"
+     }
+     timeout {
+ 	fail "stopped at bp, 2nd instr (timeout)"
+ 
+     }
+ }
+ 
*** /dev/null	Thu Aug 24 02:00:32 2000
--- consecutive.c	Thu Jun 28 11:32:27 2001
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*** 0 ****
--- 1,20 ----
+ /* 
+    Purpose of this test:  to test breakpoints on consecutive instructions.
+ */
+ 
+ int a[7] = {1, 2, 3, 4, 5, 6, 7};
+ 
+ /* assert: first line of foo has more than one instruction. */
+ int foo ()
+ {
+   return a[0] + a[1] + a[2] + a[3] + a[4] + a[5] + a[6];
+ }
+ 
+ main()
+ {
+ #ifdef usestubs
+     set_debug_traps ();
+     breakpoint ();
+ #endif
+   foo ();
+ }