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