gdb/testsuite/gdb.opt/inline-small-func.exp

   1 # Copyright 2020-2021 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
  37 standard_testfile inline-small-func.c inline-small-func.h
  38
  39 if { [prepare_for_testing "failed to prepare" ${testfile} \
  40           [list $srcfile] {debug optimize=-O1}] } {
  41     return -1
  42 }
  43
  44 if ![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.
  50 delete_breakpoints
  51
  52 # Place a breakpoint within the function in the header file.
  53 set linenum [gdb_get_line_number "callee: body" $srcfile2]
  54 gdb_breakpoint "${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.
  59 gdb_test "info breakpoints" \
  60     ".* in callee at \[^\r\n\]+${srcfile2}:${linenum}\\y.*"