gdb/testsuite/gdb.base/return-nodebug.exp

   1 # Copyright (C) 2009, 2010 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 proc do_test {type} {
  17     set typenospace [string map {{ } -} $type]
  18
  19     global pf_prefix
  20     set old_prefix $pf_prefix
  21     lappend pf_prefix "$typenospace:"
  22
  23     if {[runto "func"]} {
  24         # Verify that we do not crash when using "return" from a function with
  25         # no debugging info.  Such function has no `struct symbol'.  It may
  26         # still have an associated `struct minimal_symbol'.
  27
  28         gdb_test "return -1" \
  29                  "Return value type not available for selected stack frame\\.\r\nPlease use an explicit cast of the value to return\\." \
  30                  "return from function with no debug info without a cast"
  31
  32         # Cast of the result to the proper width must be done explicitely.
  33         gdb_test "return ($type) -1" "#0 .* main \\(.*"                 \
  34                  "return from function with no debug info with a cast"  \
  35                  "Make selected stack frame return now\\? \\(y or n\\) " "y"
  36
  37         gdb_test "advance marker" "marker \\(.*" \
  38                  "advance to marker"
  39
  40         # And if it returned the full width of the result.
  41         gdb_test "print /d t" " = -1" "full width of the returned result"
  42     }
  43
  44     set pf_prefix $old_prefix
  45 }
  46
  47 foreach type {{signed char} {short} {int} {long} {long long}} {
  48     set typeesc [string map {{ } {\ }} $type]
  49     set typenospace [string map {{ } -} $type]
  50
  51     set testfile "return-nodebug"
  52     set srcfile ${testfile}.c
  53     set srcfile1 ${testfile}1.c
  54     set binfile ${objdir}/${subdir}/${testfile}-${typenospace}
  55
  56     set additional_flags "additional_flags=-DTYPE=$typeesc"
  57
  58     if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}0.o" object [list debug $additional_flags]] != "" } {
  59         continue
  60     }
  61
  62     # This one is compiled without debug info.
  63     if { [gdb_compile "${srcdir}/${subdir}/${srcfile1}" "${binfile}1.o" object [list $additional_flags]] != "" } {
  64         continue
  65     }
  66
  67     if { [gdb_compile "${binfile}0.o ${binfile}1.o" "${binfile}" executable {debug}] != "" } {
  68         continue
  69     }
  70
  71     gdb_exit
  72     gdb_start
  73     gdb_reinitialize_dir $srcdir/$subdir
  74     gdb_load ${binfile}
  75
  76     do_test $type
  77 }