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e2882c85 | 1 | # Copyright (C) 2014-2018 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 | |
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 | # In this test we're looking at how gdb handles backtraces and | |
17 | # investigating the stack depth when confronted with an "invalid" stack, | |
18 | # that is a stack where the first few frames are normal, and then there's a | |
19 | # frame where the stack in unreadable. | |
20 | # | |
21 | # One interesting bug that has been observed is that gdb will sometime | |
22 | # exhibit different behaviour the first time a stack command is run | |
23 | # compared to the second (and later) times a command is run. This is | |
24 | # because the first time a command is run gdb actually tries to figure out | |
25 | # the answer, while the second (and later) times gdb relies on the answer | |
26 | # cached from the first time. As a result in this test each command is | |
27 | # run twice, and we restart gdb before testing each different command to | |
28 | # ensure that nothing is being cached. | |
29 | ||
30 | set opts {} | |
31 | standard_testfile .c | |
32 | ||
33 | if { ![istarget x86_64-*-* ] || ![is_lp64_target] } { | |
34 | verbose "Skipping ${testfile}." | |
35 | return | |
36 | } | |
5b362f04 | 37 | if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} $opts] } { |
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38 | return -1 |
39 | } | |
40 | ||
41 | if ![runto breakpt] { | |
42 | return -1 | |
43 | } | |
44 | ||
45 | # Use 'bt no-filters' here as the python filters will raise their own | |
46 | # error during initialisation, the no-filters case is simpler. | |
47 | ||
53e8a631 | 48 | gdb_test "bt no-filters" "^bt no-filters\r\n#0 +$hex in func2 \\(\\)\r\nBacktrace stopped: Cannot access memory at address 0x\[0-9a-f\]+" \ |
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49 | "first backtrace, with error message" |
50 | ||
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51 | gdb_test "bt no-filters" "^bt no-filters\r\n#0 +$hex in func2 \\(\\)\r\nBacktrace stopped: Cannot access memory at address 0x\[0-9a-f\]+" \ |
52 | "second backtrace, with error message" | |
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53 | |
54 | clean_restart ${binfile} | |
55 | ||
56 | if ![runto breakpt] { | |
57 | return -1 | |
58 | } | |
59 | ||
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60 | gdb_test "interpreter-exec mi \"-stack-info-depth\"" \ |
61 | "\\^done,depth=\"1\"" \ | |
62 | "check mi -stack-info-depth command, first time" | |
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63 | |
64 | gdb_test "interpreter-exec mi \"-stack-info-depth\"" \ | |
65 | "\\^done,depth=\"1\"" \ | |
66 | "check mi -stack-info-depth command, second time" | |
67 | ||
68 | clean_restart ${binfile} | |
69 | ||
70 | if ![runto breakpt] { | |
71 | return -1 | |
72 | } | |
73 | ||
53e8a631 | 74 | gdb_test "interpreter-exec mi \"-stack-list-frames\"" \ |
5031d0ae | 75 | "\\^done,stack=\\\[frame=\{level=\"0\",addr=\"$hex\",func=\"func2\"(,arch=\"\[^\"\]+\")?\}\\\]" \ |
53e8a631 | 76 | "check mi -stack-list-frames command, first time" |
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77 | |
78 | gdb_test "interpreter-exec mi \"-stack-list-frames\"" \ | |
5031d0ae | 79 | "\\^done,stack=\\\[frame=\{level=\"0\",addr=\"$hex\",func=\"func2\"(,arch=\"\[^\"\]+\")?\}\\\]" \ |
938f0e2f | 80 | "check mi -stack-list-frames command, second time" |