1# Copyright 2004, 2007 Free Software Foundation, Inc.
2
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 3 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program.  If not, see <http://www.gnu.org/licenses/>.
15
16# Please email any bugs, comments, and/or additions to this file to:
17# bug-gdb@prep.ai.mit.edu
18
19# Author: Paul N. Hilfinger (Hilfinger@gnat.com)
20
21# Test that GDB cleans up properly after errors that result when a
22# breakpoint is reset.
23
24if $tracelevel then {
25	strace $tracelevel
26}
27
28set prms_id 0
29set bug_id 0
30
31# IDT/SIM apparently doesn't have enough file descriptors to allow the
32# problem checked by this test to occur.
33if [istarget "mips-idt-*"] {
34    return 0;
35}
36
37set testfile "chng-syms"
38set srcfile ${testfile}.c
39set binfile ${objdir}/${subdir}/${testfile}
40
41if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-DVARIABLE=var1}] != "" } {
42    untested chng-syms.exp
43    return -1
44}
45
46set oldtimeout $timeout
47set timeout 10
48verbose "Timeout is now 10 seconds" 2
49
50proc expect_to_stop_here { ident } {
51    global gdb_prompt
52    global decimal
53
54    # the "at foo.c:36" output we get with -g.
55    # the "in func" output we get without -g.
56    gdb_expect {
57	-re "Breakpoint \[0-9\]*, stop_here .*$gdb_prompt $" {
58	    return 1
59	}
60	-re "$gdb_prompt $" {
61	    fail "running to stop_here $ident"
62	    return 0
63	}
64	timeout {
65	    fail "running to stop_here $ident (timeout)"
66	    return 0
67	}
68    }
69    return 1
70}
71
72gdb_exit
73gdb_start
74gdb_reinitialize_dir $srcdir/$subdir
75gdb_load ${binfile}
76
77gdb_test "break stop_here if (var1 == 42)" \
78    "Breakpoint.*at.* file .*$srcfile, line.*" \
79    "setting conditional breakpoint on function"
80gdb_run_cmd
81
82expect_to_stop_here "first time"
83
84gdb_continue_to_end "breakpoint first time through"
85
86# Now we recompile the executable, but without a variable named "var1", first
87# waiting to insure that even on fast machines, the file modification times
88# are distinct. This will force GDB to reload the file on the
89# next "run" command, causing an error when GDB tries to tries to reset
90# the breakpoint.
91
92sleep 2
93if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-DVARIABLE=var2}] != "" } {
94
95# Complication: Since GDB generally holds an open file descriptor on the
96# executable at this point, there are some systems in which the
97# re-compilation will fail. In such cases, we'll consider the test
98# (vacuously) passed providing that re-running it succeeds as before.
99
100    gdb_run_cmd
101    expect_to_stop_here "after re-compile fails"
102    gdb_continue_to_end "after re-compile fails"
103
104} else {
105
106    gdb_run_cmd
107    gdb_expect {
108	-re "Error in re-setting .*No symbol .var1..*Program exited normally.*$gdb_prompt $" {
109	    pass "running with invalidated bpt condition after executable changes"
110	}
111	-re "Error in re-setting .*No symbol .var1..*Breakpoint .*,( 0x.* in)? (\[^ \]*)exit .*$gdb_prompt $" {
112	    pass "running with invalidated bpt condition after executable changes"
113	}
114	-re "$gdb_prompt $" {
115	    fail "running with invalidated bpt condition after executable changes"
116	}
117	timeout {
118	    fail "(timeout) running with invalidated bpt condition after executable changes"
119	}
120    }
121
122}
123
124set timeout $oldtimeout
125verbose "Timeout is now $timeout seconds" 2
126return 0
127