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e2882c85 | 1 | # Copyright 2003-2018 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 | |
e22f8b7c | 5 | # the Free Software Foundation; either version 3 of the License, or |
98a23b3f | 6 | # (at your option) any later version. |
e22f8b7c | 7 | # |
98a23b3f MC |
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/>. |
98a23b3f MC |
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 | # | |
98a23b3f | 24 | |
289f9037 | 25 | standard_testfile .c |
98a23b3f MC |
26 | |
27 | if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { | |
84c93cd5 | 28 | untested "failed to compile" |
b60f0898 | 29 | return -1 |
98a23b3f MC |
30 | } |
31 | ||
289f9037 | 32 | clean_restart ${binfile} |
98a23b3f | 33 | |
78a1a894 | 34 | if ![runto abort {allow-pending}] then { |
98a23b3f MC |
35 | continue |
36 | } | |
37 | ||
38 | # See http://sources.redhat.com/gdb/bugs/1250 | |
39 | # | |
40 | # In a nutshell: the function 'beta' ends with a call to 'abort', which | |
41 | # is a noreturn function. So the last instruction of 'beta' is a call | |
42 | # to 'abort'. When gdb looks for information about the caller of | |
43 | # 'beta', it looks at the instruction after the call to 'abort' -- which | |
44 | # is the first instruction of 'alpha'! So gdb uses the wrong frame | |
45 | # information. It thinks that the test program is in 'alpha' and that | |
46 | # the prologue "push %ebp / mov %esp,%ebp" has not been executed yet, | |
47 | # and grabs the wrong values. | |
48 | # | |
49 | # By the nature of the bug, it could pass if the C compiler is not smart | |
50 | # enough to implement 'abort' as a noreturn function. This is okay. | |
51 | # The real point is that users often put breakpoints on noreturn | |
52 | # functions such as 'abort' or some kind of exitting function, and those | |
53 | # breakpoints should work. | |
54 | ||
55 | gdb_test_multiple "backtrace" "backtrace from abort" { | |
56 | -re "#0.*abort.*\r\n#1.*beta.*\r\n#2.*alpha.*\r\n#3.*main.*\r\n$gdb_prompt $" { | |
57 | pass "backtrace from abort" | |
58 | } | |
59 | -re "#0.*abort.*\r\n#1.*beta.*\r\n$gdb_prompt $" { | |
60 | # This happens with gdb HEAD as of 2003-07-13, with gcc 3.3, | |
61 | # binutils 2.14, either -gdwarf-2 or -gstabs+, on native | |
62 | # i686-pc-linux-gnu. | |
63 | # | |
64 | # gdb gets 'abort' and 'beta' right and then goes into the | |
65 | # weeds. | |
66 | kfail "gdb/1250" "backtrace from abort" | |
67 | } | |
68 | } |