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0b302171 | 1 | # Copyright 2003, 2007-2012 Free Software Foundation, Inc. |
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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 | |
e22f8b7c | 5 | # the Free Software Foundation; either version 3 of the License, or |
98a23b3f | 6 | # (at your option) any later version. |
e22f8b7c | 7 | # |
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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. | |
e22f8b7c | 12 | # |
98a23b3f | 13 | # You should have received a copy of the GNU General Public License |
e22f8b7c | 14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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15 | |
16 | # Tests for PR gdb/1250. | |
17 | # 2003-07-15 Michael Chastain <mec@shout.net> | |
18 | ||
19 | # This file is part of the gdb testsuite. | |
20 | ||
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21 | # |
22 | # test running programs | |
23 | # | |
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24 | |
25 | set testfile "gdb1250" | |
26 | set srcfile ${testfile}.c | |
27 | set binfile ${objdir}/${subdir}/${testfile} | |
28 | ||
29 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
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30 | untested gdb1250.exp |
31 | return -1 | |
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32 | } |
33 | ||
34 | gdb_exit | |
35 | gdb_start | |
36 | gdb_reinitialize_dir $srcdir/$subdir | |
37 | gdb_load ${binfile} | |
38 | ||
78a1a894 | 39 | if ![runto abort {allow-pending}] then { |
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40 | continue |
41 | } | |
42 | ||
43 | # See http://sources.redhat.com/gdb/bugs/1250 | |
44 | # | |
45 | # In a nutshell: the function 'beta' ends with a call to 'abort', which | |
46 | # is a noreturn function. So the last instruction of 'beta' is a call | |
47 | # to 'abort'. When gdb looks for information about the caller of | |
48 | # 'beta', it looks at the instruction after the call to 'abort' -- which | |
49 | # is the first instruction of 'alpha'! So gdb uses the wrong frame | |
50 | # information. It thinks that the test program is in 'alpha' and that | |
51 | # the prologue "push %ebp / mov %esp,%ebp" has not been executed yet, | |
52 | # and grabs the wrong values. | |
53 | # | |
54 | # By the nature of the bug, it could pass if the C compiler is not smart | |
55 | # enough to implement 'abort' as a noreturn function. This is okay. | |
56 | # The real point is that users often put breakpoints on noreturn | |
57 | # functions such as 'abort' or some kind of exitting function, and those | |
58 | # breakpoints should work. | |
59 | ||
60 | gdb_test_multiple "backtrace" "backtrace from abort" { | |
61 | -re "#0.*abort.*\r\n#1.*beta.*\r\n#2.*alpha.*\r\n#3.*main.*\r\n$gdb_prompt $" { | |
62 | pass "backtrace from abort" | |
63 | } | |
64 | -re "#0.*abort.*\r\n#1.*beta.*\r\n$gdb_prompt $" { | |
65 | # This happens with gdb HEAD as of 2003-07-13, with gcc 3.3, | |
66 | # binutils 2.14, either -gdwarf-2 or -gstabs+, on native | |
67 | # i686-pc-linux-gnu. | |
68 | # | |
69 | # gdb gets 'abort' and 'beta' right and then goes into the | |
70 | # weeds. | |
71 | kfail "gdb/1250" "backtrace from abort" | |
72 | } | |
73 | } |