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6aba47ca | 1 | # Copyright 2003, 2007 Free Software Foundation, Inc. |
98a23b3f MC |
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 2 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, write to the Free Software | |
15 | # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
16 | ||
17 | # Tests for PR gdb/1250. | |
18 | # 2003-07-15 Michael Chastain <mec@shout.net> | |
19 | ||
20 | # This file is part of the gdb testsuite. | |
21 | ||
22 | if $tracelevel then { | |
23 | strace $tracelevel | |
24 | } | |
25 | ||
26 | # | |
27 | # test running programs | |
28 | # | |
29 | set prms_id 0 | |
30 | set bug_id 0 | |
31 | ||
32 | set testfile "gdb1250" | |
33 | set srcfile ${testfile}.c | |
34 | set binfile ${objdir}/${subdir}/${testfile} | |
35 | ||
36 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
b60f0898 JB |
37 | untested gdb1250.exp |
38 | return -1 | |
98a23b3f MC |
39 | } |
40 | ||
41 | gdb_exit | |
42 | gdb_start | |
43 | gdb_reinitialize_dir $srcdir/$subdir | |
44 | gdb_load ${binfile} | |
45 | ||
78a1a894 | 46 | if ![runto abort {allow-pending}] then { |
98a23b3f MC |
47 | perror "couldn't run to breakpoint" |
48 | continue | |
49 | } | |
50 | ||
51 | # See http://sources.redhat.com/gdb/bugs/1250 | |
52 | # | |
53 | # In a nutshell: the function 'beta' ends with a call to 'abort', which | |
54 | # is a noreturn function. So the last instruction of 'beta' is a call | |
55 | # to 'abort'. When gdb looks for information about the caller of | |
56 | # 'beta', it looks at the instruction after the call to 'abort' -- which | |
57 | # is the first instruction of 'alpha'! So gdb uses the wrong frame | |
58 | # information. It thinks that the test program is in 'alpha' and that | |
59 | # the prologue "push %ebp / mov %esp,%ebp" has not been executed yet, | |
60 | # and grabs the wrong values. | |
61 | # | |
62 | # By the nature of the bug, it could pass if the C compiler is not smart | |
63 | # enough to implement 'abort' as a noreturn function. This is okay. | |
64 | # The real point is that users often put breakpoints on noreturn | |
65 | # functions such as 'abort' or some kind of exitting function, and those | |
66 | # breakpoints should work. | |
67 | ||
68 | gdb_test_multiple "backtrace" "backtrace from abort" { | |
69 | -re "#0.*abort.*\r\n#1.*beta.*\r\n#2.*alpha.*\r\n#3.*main.*\r\n$gdb_prompt $" { | |
70 | pass "backtrace from abort" | |
71 | } | |
72 | -re "#0.*abort.*\r\n#1.*beta.*\r\n$gdb_prompt $" { | |
73 | # This happens with gdb HEAD as of 2003-07-13, with gcc 3.3, | |
74 | # binutils 2.14, either -gdwarf-2 or -gstabs+, on native | |
75 | # i686-pc-linux-gnu. | |
76 | # | |
77 | # gdb gets 'abort' and 'beta' right and then goes into the | |
78 | # weeds. | |
79 | kfail "gdb/1250" "backtrace from abort" | |
80 | } | |
81 | } |