1# Copyright 2020 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 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# Check for an issue in GDB where buildsym_compunit::record_line was
17# removing duplicate line table entries, but skip_prologue_using_sal
18# depends on these duplicates to spot the end of the prologue.
19#
20# When the de-duplication was added this regression was not spotted as
21# it requires a particular combination of a (very) small function
22# being inlined into an also very small outer function.
23#
24# See also gdb.dwarf/dw2-inline-small-func.exp for a version of this
25# test that makes use of the Dejagnu DWARF compiler.
26#
27# This test simply compiles with optimization and checks that GDB can
28# do something suitable with the compiled binary.  Problems with this
29# test are most likely to occur when GDB asks the target specific code
30# to skip the prologue (gdbarch_skip_prologue).  Some targets make use
31# of skip_prologue_using_sal, which should be fine, however, some
32# targets make a poor attempt to duplicate parts of
33# skip_prologue_using_sal, these targets could easily fail this test.
34# This is not (necessarily) a problem with this test, but could
35# indicate a weakness with the target in question.
36
37standard_testfile inline-small-func.c inline-small-func.h
38
39if { [prepare_for_testing "failed to prepare" ${testfile} \
40	  [list $srcfile] {debug optimize=-O1}] } {
41    return -1
42}
43
44if ![runto_main] {
45    return -1
46}
47
48# Delete all breakpoints so that the output of "info breakpoints"
49# below will only contain a single breakpoint.
50delete_breakpoints
51
52# Place a breakpoint within the function in the header file.
53set linenum [gdb_get_line_number "callee: body" $srcfile2]
54gdb_breakpoint "${srcfile2}:${linenum}"
55
56# Check that the breakpoint was placed where we expected.  It should
57# appear at the requested line.  When the bug in GDB was present the
58# breakpoint would be placed on one of the following lines instead.
59gdb_test "info breakpoints" \
60    ".* in callee at \[^\r\n\]+${srcfile2}:${linenum}\\y.*"
61