81 lines
2.8 KiB
Plaintext
81 lines
2.8 KiB
Plaintext
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# Copyright 2003 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# Tests for PR gdb/1250.
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# 2003-07-15 Michael Chastain <mec@shout.net>
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# This file is part of the gdb testsuite.
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if $tracelevel then {
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strace $tracelevel
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}
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#
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# test running programs
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#
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set prms_id 0
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set bug_id 0
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set testfile "gdb1250"
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set srcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
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}
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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if ![runto abort] then {
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perror "couldn't run to breakpoint"
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continue
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}
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# See http://sources.redhat.com/gdb/bugs/1250
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#
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# In a nutshell: the function 'beta' ends with a call to 'abort', which
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# is a noreturn function. So the last instruction of 'beta' is a call
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# to 'abort'. When gdb looks for information about the caller of
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# 'beta', it looks at the instruction after the call to 'abort' -- which
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# is the first instruction of 'alpha'! So gdb uses the wrong frame
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# information. It thinks that the test program is in 'alpha' and that
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# the prologue "push %ebp / mov %esp,%ebp" has not been executed yet,
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# and grabs the wrong values.
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#
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# By the nature of the bug, it could pass if the C compiler is not smart
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# enough to implement 'abort' as a noreturn function. This is okay.
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# The real point is that users often put breakpoints on noreturn
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# functions such as 'abort' or some kind of exitting function, and those
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# breakpoints should work.
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gdb_test_multiple "backtrace" "backtrace from abort" {
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-re "#0.*abort.*\r\n#1.*beta.*\r\n#2.*alpha.*\r\n#3.*main.*\r\n$gdb_prompt $" {
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pass "backtrace from abort"
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}
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-re "#0.*abort.*\r\n#1.*beta.*\r\n$gdb_prompt $" {
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# This happens with gdb HEAD as of 2003-07-13, with gcc 3.3,
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# binutils 2.14, either -gdwarf-2 or -gstabs+, on native
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# i686-pc-linux-gnu.
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#
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# gdb gets 'abort' and 'beta' right and then goes into the
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# weeds.
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kfail "gdb/1250" "backtrace from abort"
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}
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}
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