gdb/testsuite/gdb.base/nodebug.exp

   1 # Copyright 1997-2017 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 # Test that things still (sort of) work when compiled without -g.
  17
  18
  19 standard_testfile .c
  20
  21 if [get_compiler_info] {
  22     return -1
  23 }
  24
  25 if [test_compiler_info "xlc-*"] {
  26     # By default, IBM'x xlc compiler doesn't add static variables into the symtab.
  27     # Use "-qstatsym" to do so.
  28     set exec_opts additional_flags=-qstatsym
  29 } else {
  30     set exec_opts ""
  31 }
  32
  33 if  { [gdb_compile $srcdir/$subdir/$srcfile $binfile executable $exec_opts] != "" } {
  34     untested "failed to compile"
  35     return -1
  36 }
  37
  38 # Start with a fresh gdb.
  39
  40 clean_restart $binfile
  41
  42 # Test calling no-debug functions involving argument types that may
  43 # require coercion/promotion, both prototyped and unprototyped, both
  44 # return-type-cast style, and function-pointer-cast styles.
  45 proc test_call_promotion {} {
  46     if [target_info exists gdb,cannot_call_functions] {
  47         return
  48     }
  49
  50     # Call prototyped function with float parameters via both
  51     # return-type cast and function-pointer cast.  This checks that
  52     # GDB doesn't do float->double coercion.
  53     gdb_test "p (float) multf(2.0f, 3.0f)" " = 6"
  54     gdb_test "p ((float (*) (float, float)) multf)(2, 3)" " = 6"
  55     gdb_test "p ((float (*) (float, float)) multf)(2.0f, 3.0f)" " = 6"
  56
  57     # Call unprototyped function with float parameters via
  58     # function-pointer cast, only.  return-type cast assumes
  59     # protototyped.  Check that GDB does float->double coercion.
  60     gdb_test "p ((float (*) ()) multf_noproto)(2.0f, 3.0f)" " = 6"
  61     gdb_test "p ((float (*) ()) multf_noproto)(2.0, 3.0)" " = 6"
  62
  63     # Same, but for double.
  64     gdb_test "p (double) mult (2.0, 3.0)" " = 6"
  65     gdb_test "p ((double (*) (double, double)) mult)(2.0f, 3.0f)" " = 6"
  66     gdb_test "p ((double (*) (double, double)) mult)(2, 3)" " = 6"
  67     gdb_test "p ((double (*) ()) mult_noproto)(2.0f, 3.0f)" " = 6"
  68     gdb_test "p ((double (*) ()) mult_noproto)(2.0, 3.0)" " = 6"
  69
  70     # Check that GDB promotes char->int correctly.
  71     gdb_test "p /d (uint8) add8((uint8) 2, (uint8) 3)" " = 5"
  72     gdb_test "p /d ((uint8 (*) (uint8, uint8)) add8)((uint8) 2, (uint8) 3)" " = 5"
  73     gdb_test "p /d ((uint8 (*) ()) add8_noproto)((uint8) 2, (uint8) 3)" " = 5"
  74 }
  75
  76 if [runto inner] then {
  77
  78     # Expect to find global/local symbols in each of text/data/bss.
  79
  80     # The exact format for some of this output is not necessarily
  81     # ideal, particularly interpreting "p top" requires a fair bit of
  82     # savvy about gdb's workings and the meaning of the "{}"
  83     # construct.  So the details maybe could be tweaked.  But the
  84     # basic purpose should be maintained, which is (a) users should be
  85     # able to interact with these variables with some care (they have
  86     # to know how to interpret them according to their real type,
  87     # since gdb doesn't know the type), but (b) users should be able
  88     # to detect that gdb does not know the type, rather than just
  89     # being told they are ints or functions returning int like old
  90     # versions of gdb used to do.
  91
  92     # On alpha (and other ecoff systems) the native compilers put
  93     # out debugging info for non-aggregate return values of functions
  94     # even without -g, which should be accepted.
  95
  96     with_test_prefix "func" {
  97         # Most languages default to printing like C.
  98         set c_print_re " = \\{<text variable, no debug info>\\} $hex <top>"
  99         set c_whatis_re " = <text variable, no debug info>"
 100         set c_ptype_re "= <unknown return type> \\(\\)"
 101
 102         set cxx_ptype_re "= <unknown return type> \\(void\\)"
 103
 104         set ada_ptype_re " = function return <unknown return type>"
 105
 106         set m2_print_re " = \\{PROCEDURE <text variable, no debug info> \\(\\) : <unknown return type>\\} $hex <top>"
 107         set m2_whatis_re "PROCEDURE <text variable, no debug info> \\(\\) : <unknown return type>"
 108         set m2_ptype_re $m2_whatis_re
 109
 110         # Rust can't access minsyms?
 111         set rust_nosym "No symbol 'top' in current context"
 112
 113         set pascal_ptype_re "type = procedure  : <unknown return type>"
 114
 115         #LANG           #PRINT          #WHATIS         #PTYPE
 116         foreach lang_line {
 117             {"ada"              $c_print_re     $c_whatis_re    $ada_ptype_re}
 118             {"asm"              $c_print_re     $c_whatis_re    $c_ptype_re}
 119             {"c"                $c_print_re     $c_whatis_re    $c_ptype_re}
 120             {"c++"              $c_print_re     $c_whatis_re    $cxx_ptype_re}
 121             {"d"                $c_print_re     $c_whatis_re    $c_ptype_re}
 122             {"fortran"  $c_print_re     $c_whatis_re    $c_ptype_re}
 123             {"go"               $c_print_re     $c_whatis_re    $c_ptype_re}
 124             {"minimal"  $c_print_re     $c_whatis_re    $c_ptype_re}
 125             {"modula-2" $m2_print_re    $m2_whatis_re   $m2_ptype_re}
 126             {"objective-c"      $c_print_re     $c_whatis_re    $c_ptype_re}
 127             {"opencl"   $c_print_re     $c_whatis_re    $c_ptype_re}
 128             {"pascal"   $c_print_re     $c_whatis_re    $pascal_ptype_re}
 129             {"rust"             $rust_nosym     $rust_nosym     $rust_nosym}
 130         } {
 131             set lang [lindex $lang_line 0]
 132             set print_re [lindex $lang_line 1]
 133             set whatis_re [lindex $lang_line 2]
 134             set ptype_re [lindex $lang_line 3]
 135
 136             set print_re [subst "$print_re"]
 137             set whatis_re [subst "$whatis_re"]
 138             set ptype_re [subst "$ptype_re"]
 139
 140             with_test_prefix "$lang" {
 141                 gdb_test_no_output "set language $lang"
 142                 gdb_test "p top" $print_re
 143                 gdb_test "whatis top" $whatis_re
 144                 gdb_test "ptype top" $ptype_re
 145             }
 146         }
 147     }
 148
 149     gdb_test_no_output "set language auto"
 150
 151     # We can't rely on uintXX_t being available/known to GDB because
 152     # we may or may not have debug info for those (depending on
 153     # whether we have debug info for the C runtime, for example).
 154     gdb_test_no_output "macro define uint8 unsigned char"
 155     gdb_test_no_output "macro define uint32 unsigned int"
 156     gdb_test_no_output "macro define uint64 unsigned long long"
 157
 158     set data_var_type "<data variable, no debug info>"
 159     set unk_type_re "has unknown type.*to its declared type"
 160     set ptr_math_re "Cannot perform pointer math on incomplete type \"$data_var_type\", try casting to a known type, or void \\*\\."
 161     set not_mem_re "Attempt to take address of value not located in memory\\."
 162
 163     set dataglobal_unk_re "dataglobal.*$unk_type_re"
 164
 165          #exp                           #fmt #print                                             #ptype/whatis
 166     foreach line {
 167         {"dataglobal"                   ""   $dataglobal_unk_re                                 " = $data_var_type"}
 168         {"(int) dataglobal"             ""   "= 3"                                              " = int"}
 169         {"sizeof(dataglobal)"           ""   $dataglobal_unk_re                                 $dataglobal_unk_re}
 170         {"sizeof(dataglobal + 1)"       ""   $dataglobal_unk_re                                 $dataglobal_unk_re}
 171         {"sizeof((int) dataglobal)"     ""   " = $decimal"                                      " = int"}
 172         {"dataglobal + 1"               ""   $dataglobal_unk_re                                 $dataglobal_unk_re}
 173         {"&dataglobal"                  ""   "\\($data_var_type \\*\\) $hex <dataglobal>"       " = $data_var_type \\*"}
 174         {"&dataglobal + 1"              ""   $ptr_math_re                                       $ptr_math_re}
 175         {"(int *) &dataglobal + 1"      ""   " = \\(int \\*\\) $hex <datalocal>"                "int \\*"}
 176         {"&(int) dataglobal + 1"        ""   $not_mem_re                                        $not_mem_re}
 177         {"&dataglobal, &dataglobal"     ""   "\\($data_var_type \\*\\) $hex <dataglobal>"       " = $data_var_type \\*"}
 178         {"*dataglobal"                  ""   $dataglobal_unk_re                                 $dataglobal_unk_re}
 179
 180         {"dataglobal8"                  "/x" $dataglobal_unk_re                                 " = $data_var_type"}
 181         {"(uint8) dataglobal8"          "/x" " = 0xff"                                          "unsigned char"}
 182
 183         {"dataglobal32_1"               "/x" $dataglobal_unk_re                                 " = $data_var_type"}
 184         {"(uint32) dataglobal32_1"      "/x" " = 0x7fffffff"                                    "unsigned int"}
 185         {"dataglobal32_2"               "/x" $dataglobal_unk_re                                 " = $data_var_type"}
 186         {"(uint32) dataglobal32_2"      "/x" " = 0xff"                                          "unsigned int"}
 187
 188         {"dataglobal64_1"               "/x" $dataglobal_unk_re                                 " = $data_var_type"}
 189         {"(uint64) dataglobal64_1"      "/x" " = 0x7fffffffffffffff"                            "unsigned long long"}
 190         {"dataglobal64_2"               "/x" $dataglobal_unk_re                                 " = $data_var_type"}
 191         {"(uint64) dataglobal64_2"      "/x" " = 0xff"                                          "unsigned long long"}
 192     } {
 193         set exp [lindex $line 0]
 194         # Expand variables.
 195         set fmt [subst -nobackslashes [lindex $line 1]]
 196         set print [subst  -nobackslashes [lindex $line 2]]
 197         set whatis [subst -nobackslashes [lindex $line 3]]
 198         if {$fmt == ""} {
 199             gdb_test "p $exp" $print
 200         } else {
 201             gdb_test "p $fmt $exp" $print
 202         }
 203         gdb_test "whatis $exp" $whatis
 204         gdb_test "ptype $exp" $whatis
 205     }
 206
 207     # The only symbol xcoff puts out for statics is for the TOC entry.
 208     # Possible, but hairy, for gdb to deal.  Right now it doesn't, it
 209     # doesn't know the variables exist at all.
 210     setup_xfail "rs6000*-*-aix*"
 211     setup_xfail "powerpc*-*-aix*"
 212
 213     gdb_test "p datalocal" "datalocal.*$unk_type_re"
 214     gdb_test "p (int) datalocal" "= 4"
 215
 216     setup_xfail "rs6000*-*-aix*"
 217     setup_xfail "powerpc*-*-aix*"
 218
 219     gdb_test "whatis datalocal" "datalocal.*$data_var_type"
 220
 221     setup_xfail "rs6000*-*-aix*"
 222     setup_xfail "powerpc*-*-aix*"
 223
 224     gdb_test "ptype datalocal" "datalocal.*$data_var_type"
 225
 226     gdb_test "p bssglobal" "bssglobal.*$unk_type_re"
 227     gdb_test "p (int) bssglobal" "= 0"
 228     gdb_test "whatis bssglobal" $data_var_type
 229     gdb_test "ptype bssglobal" $data_var_type
 230
 231     setup_xfail "rs6000*-*-aix*"
 232     setup_xfail "powerpc*-*-aix*"
 233
 234     gdb_test "p bsslocal" "bsslocal.*$unk_type_re"
 235     gdb_test "p (int) bsslocal" "= 0"
 236
 237     setup_xfail "rs6000*-*-aix*"
 238     setup_xfail "powerpc*-*-aix*"
 239
 240     gdb_test "whatis bsslocal" $data_var_type
 241
 242     setup_xfail "rs6000*-*-aix*"
 243     setup_xfail "powerpc*-*-aix*"
 244
 245     gdb_test "ptype bsslocal" $data_var_type
 246
 247     gdb_test "backtrace 10" "#0.*inner.*#1.*middle.*#2.*top.*#3.*main.*" \
 248         "backtrace from inner in nodebug.exp"
 249     # Or if that doesn't work, at least hope for the external symbols
 250     # Commented out because if we aren't going to xfail the above test
 251     # ever, why bother with a weaker test?
 252     #gdb_test "backtrace 10" "#0.*inner.*#1.*#2.*top.*#3.*main.*" \
 253         #    "backtrace from inner in nodebug.exp for externals"
 254
 255     # This test is not as obscure as it might look.  `p getenv ("TERM")'
 256     # is a real-world example, at least on many systems.
 257     foreach cmd {"p/c" "ptype" "whatis"} {
 258         gdb_test "$cmd array_index(\"abcdef\",2)" \
 259             "'array_index' has unknown return type; cast the call to its declared return type"
 260     }
 261     if [target_info exists gdb,cannot_call_functions] {
 262         unsupported "p/c (int) array_index(\"abcdef\",2)"
 263     } else {
 264         # We need to up this because this can be really slow on some boards.
 265         # (malloc() is called as part of the test).
 266         set prev_timeout $timeout
 267         set timeout 60
 268         gdb_test {p/c (int) array_index("abcdef",2)} " = 99 'c'"
 269         set timeout $prev_timeout
 270     }
 271
 272     test_call_promotion
 273
 274     # Now, try that we can give names of file-local symbols which happen
 275     # to be unique, and have it still work
 276     if [runto middle] then {
 277         gdb_test "backtrace 10" "#0.*middle.*#1.*top.*#2.*main.*" \
 278             "backtrace from middle in nodebug.exp"
 279     }
 280 }