gdb/testsuite/gdb.base/opaque.exp

   1 # Copyright 1992-2021 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 # This file was written by Fred Fish. (fnf@cygnus.com)
  17
  18
  19 # Create and source the file that provides information about the compiler
  20 # used to compile the test case.
  21 if [get_compiler_info] {
  22     return -1
  23 }
  24
  25 standard_testfile opaque0.c opaque1.c
  26
  27 if {[prepare_for_testing "failed to prepare" $testfile \
  28          [list $srcfile $srcfile2] debug]} {
  29     return -1
  30 }
  31
  32 #
  33 # Test basic opaque structure handling (statically).
  34 # The ordering of the tests is significant.  We first try the things that
  35 # might fail if gdb fails to connect the uses of opaque structures to
  36 # the actual opaque structure definition.
  37
  38 # When we start up, gdb sets the file containing main() as the current
  39 # source file.  The actual structure foo is defined in a different file.
  40 # A pointer (foop) to an instance of the opaque struct is defined in the same
  41 # source file as main().  Ensure that gdb correctly "connected" the definition
  42 # in the other file with the pointer to the opaque struct in the file containing
  43 # "foop".
  44
  45 # Define a procedure to set up an xfail for all targets that do not support
  46 # this sort of cross reference.
  47 # Any target gcc that has a DBX_NO_XREFS definition in its config file will
  48 # not support it (FIXME: Is this still true; I suspect maybe not).
  49
  50 # Native alpha ecoff doesn't support it either.
  51 # I don't think this type of cross reference works for any COFF target
  52 # either.
  53
  54 proc setup_xfail_on_opaque_pointer {} {
  55         global gcc_compiled
  56
  57         setup_xfail "vax-*-*" "i*86-sequent-bsd*"
  58        if {!$gcc_compiled} then {
  59                setup_xfail "alpha-*-*"
  60        }
  61 }
  62
  63 # This seems easier than trying to track different versions of xlc; I'm
  64 # not sure there is much rhyme or reason regarding which tests it fails
  65 # and which ones it passes.
  66 if {[istarget "rs6000-*-aix*"] && !$gcc_compiled} then {
  67     warning "xfails in opaque.exp may not be set up correctly for xlc"
  68 }
  69
  70 setup_xfail_on_opaque_pointer
  71 gdb_test "whatis foop" \
  72     "type = struct foo \[*\]+" \
  73     "whatis on opaque struct pointer (statically)"
  74
  75
  76 # Ensure that we know the form of the structure that foop points to.
  77
  78 setup_xfail_on_opaque_pointer
  79 if {!$gcc_compiled} then { setup_xfail "rs6000-*-*" }
  80 gdb_test "ptype foop" \
  81     "type = struct foo \{\[\r\n\]+    int a;\[\r\n\]+    int b;\[\r\n\]+\} \[*\]+" \
  82     "ptype on opaque struct pointer (statically)"
  83
  84
  85 # An instance of the opaque structure (afoo) is defined in a different file.
  86 # Ensure that we can locate afoo and the structure definition.
  87
  88 gdb_test "whatis afoo" \
  89     "type = struct foo" \
  90     "whatis on opaque struct instance (statically)"
  91
  92
  93 # Ensure that we know the form of "afoo".
  94
  95 gdb_test "ptype afoo" \
  96     "type = struct foo \{\[\r\n\]+    int a;\[\r\n\]+    int b;\[\r\n\]+\}" \
  97     "ptype on opaque struct instance (statically)"
  98
  99
 100 # Ensure that we know what a struct foo looks like.
 101
 102 gdb_test "ptype struct foo" \
 103     "type = struct foo \{\[\r\n\]+    int a;\[\r\n\]+    int b;\[\r\n\]+\}" \
 104     "ptype on opaque struct tagname (statically)"
 105
 106
 107 #
 108 # Done with static tests, now test dynamic opaque structure handling.
 109 # We reload the symbol table so we forget about anything we might
 110 # have learned during the static tests.
 111 #
 112
 113 gdb_reinitialize_dir $srcdir/$subdir
 114 gdb_load ${binfile}
 115
 116 # Run to main, where struct foo is incomplete.
 117 if ![runto_main] {
 118     perror "cannot run to breakpoint at main"
 119 }
 120
 121
 122 # The current source file is now the one containing main().  The structure foo
 123 # is defined in a different file, but we have a pointer to an instance of
 124 # the opaque structure in the current file.  Ensure we know it's type.
 125
 126 setup_xfail_on_opaque_pointer
 127 gdb_test "whatis foop" \
 128     "type = struct foo \[*\]+" \
 129     "whatis on opaque struct pointer (dynamically)"
 130
 131
 132 # Ensure that we know the form of the thing foop points to.
 133
 134 setup_xfail_on_opaque_pointer
 135 if {!$gcc_compiled} then { setup_xfail "rs6000-*-*" }
 136 gdb_test "ptype foop" \
 137     "type = struct foo \{\[\r\n\]+    int a;\[\r\n\]+    int b;\[\r\n\]+\} \[*\]+" \
 138     "ptype on opaque struct pointer (dynamically) 1"
 139
 140 gdb_test "whatis afoo" \
 141     "type = struct foo" \
 142     "whatis on opaque struct instance (dynamically) 1"
 143
 144
 145 # Ensure that we know the form of afoo, an instance of a struct foo.
 146
 147 gdb_test "ptype afoo" \
 148     "type = struct foo \{\[\r\n\]+    int a;\[\r\n\]+    int b;\[\r\n\]+\}" \
 149     "ptype on opaque struct instance (dynamically) 1"
 150
 151
 152 # Ensure that we know the form of an explicit struct foo.
 153
 154 if {!$gcc_compiled} then { setup_xfail "rs6000-*-*" }
 155 gdb_test "ptype struct foo" \
 156     "type = struct foo \{\[\r\n\]+    int a;\[\r\n\]+    int b;\[\r\n\]+\}" \
 157     "ptype on opaque struct tagname (dynamically) 1"
 158
 159
 160 # Now reload the symbols again so we forget about anything we might
 161 # have learned reading the symbols during the previous tests.
 162
 163 gdb_reinitialize_dir $srcdir/$subdir
 164 gdb_load ${binfile}
 165
 166 # Run to getfoo, where struct foo is complete.
 167 if ![runto getfoo] {
 168     perror "cannot run to breakpoint at getfoo"
 169 }
 170
 171
 172 # Ensure that we know what foop is.
 173
 174 setup_xfail_on_opaque_pointer
 175 gdb_test "whatis foop" \
 176     "type = struct foo \[*\]+" \
 177     "whatis on opaque struct pointer (dynamically) 1"
 178
 179
 180 # Ensure that we know the form of the thing foop points to.
 181
 182 setup_xfail_on_opaque_pointer
 183 gdb_test "ptype foop" \
 184     "type = struct foo \{\[\r\n\]+    int a;\[\r\n\]+    int b;\[\r\n\]+\} \[*\]+" \
 185     "ptype on opaque struct pointer (dynamically) 2"
 186
 187 gdb_test "whatis afoo" \
 188     "type = struct foo" \
 189     "whatis on opaque struct instance (dynamically) 2"
 190
 191
 192 # Ensure that we know the form of afoo, an instance of a struct foo.
 193
 194 gdb_test "ptype afoo" \
 195     "type = struct foo \{\[\r\n\]+    int a;\[\r\n\]+    int b;\[\r\n\]+\}" \
 196     "ptype on opaque struct instance (dynamically) 2"
 197
 198
 199 # Ensure that we know the form of an explicit struct foo.
 200
 201 gdb_test "ptype struct foo" \
 202     "type = struct foo \{\[\r\n\]+    int a;\[\r\n\]+    int b;\[\r\n\]+\}" \
 203     "ptype on opaque struct tagname (dynamically) 2"