projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 98a23b3f MC |
1 | # Copyright 2003 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 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}] != "" } { | |
| 37 | gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail." | |
| 38 | } | |
| 39 | ||
| 40 | gdb_exit | |
| 41 | gdb_start | |
| 42 | gdb_reinitialize_dir $srcdir/$subdir | |
| 43 | gdb_load ${binfile} | |
| 44 | ||
| 78a1a894 | 45 | if ![runto abort {allow-pending}] then { |
| 98a23b3f MC |
46 | perror "couldn't run to breakpoint" |
| 47 | continue | |
| 48 | } | |
| 49 | ||
| 50 | # See http://sources.redhat.com/gdb/bugs/1250 | |
| 51 | # | |
| 52 | # In a nutshell: the function 'beta' ends with a call to 'abort', which | |
| 53 | # is a noreturn function. So the last instruction of 'beta' is a call | |
| 54 | # to 'abort'. When gdb looks for information about the caller of | |
| 55 | # 'beta', it looks at the instruction after the call to 'abort' -- which | |
| 56 | # is the first instruction of 'alpha'! So gdb uses the wrong frame | |
| 57 | # information. It thinks that the test program is in 'alpha' and that | |
| 58 | # the prologue "push %ebp / mov %esp,%ebp" has not been executed yet, | |
| 59 | # and grabs the wrong values. | |
| 60 | # | |
| 61 | # By the nature of the bug, it could pass if the C compiler is not smart | |
| 62 | # enough to implement 'abort' as a noreturn function. This is okay. | |
| 63 | # The real point is that users often put breakpoints on noreturn | |
| 64 | # functions such as 'abort' or some kind of exitting function, and those | |
| 65 | # breakpoints should work. | |
| 66 | ||
| 67 | gdb_test_multiple "backtrace" "backtrace from abort" { | |
| 68 | -re "#0.*abort.*\r\n#1.*beta.*\r\n#2.*alpha.*\r\n#3.*main.*\r\n$gdb_prompt $" { | |
| 69 | pass "backtrace from abort" | |
| 70 | } | |
| 71 | -re "#0.*abort.*\r\n#1.*beta.*\r\n$gdb_prompt $" { | |
| 72 | # This happens with gdb HEAD as of 2003-07-13, with gcc 3.3, | |
| 73 | # binutils 2.14, either -gdwarf-2 or -gstabs+, on native | |
| 74 | # i686-pc-linux-gnu. | |
| 75 | # | |
| 76 | # gdb gets 'abort' and 'beta' right and then goes into the | |
| 77 | # weeds. | |
| 78 | kfail "gdb/1250" "backtrace from abort" | |
| 79 | } | |
| 80 | } |