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      1 # Copyright 2023-2024 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 load_lib "ada.exp"
     17 
     18 require allow_ada_tests
     19 
     20 # GCC with commit ff9baa5f1c5 ("DWARF: make it possible to emit debug info for
     21 # declarations only") is required.  The commit makes sure that file-scope
     22 # function and variable declarations are emitted in dwarf.  This allows the
     23 # description of imported entries, making them available to the debugger.
     24 require {expr [gcc_major_version] >= 8}
     25 
     26 standard_ada_testfile prog
     27 
     28 set cfile "inc"
     29 set csrcfile ${srcdir}/${subdir}/${testdir}/${cfile}.c
     30 set cobject [standard_output_file ${cfile}.o]
     31 
     32 if {[gdb_compile "${csrcfile}" "${cobject}" object debug] != ""} {
     33     untested "could not compile C file"
     34     return
     35 }
     36 if {[gdb_compile_ada "${srcfile}" "${binfile}" executable \
     37 	 [list debug additional_flags=-largs \
     38 	      additional_flags=${cobject} additional_flags=-margs]] != ""} {
     39     return -1
     40 }
     41 
     42 clean_restart ${testfile}
     43 
     44 set bp_location [gdb_get_line_number "BREAK" ${testdir}/prog.adb]
     45 runto "prog.adb:$bp_location"
     46 
     47 gdb_test "print ordinary_var" " = 78"
     48 
     49 gdb_test "print imported_var" " = 42"
     50 gdb_test "print imported_var_ada" " = 42"
     51 gdb_test "print local_imported_var" " = 42"
     52 gdb_test "print pkg.imported_var_ada" " = 42"
     53 
     54 gdb_test "print pkg.exported_var_ada" " = 99"
     55 gdb_test "print exported_var_ada" " = 99"
     56 
     57 # This passes with gcc 10 but fails with gcc 9.  With gcc 9, we have:
     58 #   <1><1659>: Abbrev Number: 4 (DW_TAG_subprogram)
     59 #      <165a>   DW_AT_external    : 1
     60 #      <165a>   DW_AT_name        : pkg__imported_func_ada
     61 #      <165e>   DW_AT_decl_file   : 2
     62 #      <165f>   DW_AT_decl_line   : 22
     63 #      <1660>   DW_AT_decl_column : 13
     64 #      <1661>   DW_AT_linkage_name: imported_func
     65 #      <1665>   DW_AT_type        : <0x1669>
     66 # and with gcc 10 instead:
     67 #   <1><1670>: Abbrev Number: 4 (DW_TAG_subprogram)
     68 #      <1671>   DW_AT_external    : 1
     69 #      <1671>   DW_AT_name        : pkg__imported_func_ada
     70 #      <1675>   DW_AT_decl_file   : 2
     71 #      <1676>   DW_AT_decl_line   : 22
     72 #      <1677>   DW_AT_decl_column : 13
     73 #      <1678>   DW_AT_linkage_name: imported_func
     74 #      <167c>   DW_AT_type        : <0x1680>
     75 #      <1680>   DW_AT_declaration : 1
     76 # The fact that things start to work when adding the DW_AT_declaration is
     77 # consistent with what is described in commit ff9baa5f1c5, so xfail this
     78 # (without pinpointing it to a specific gcc PR or commit).
     79 if { [gcc_major_version] < 10 } {
     80     setup_xfail *-*-*
     81 }
     82 gdb_breakpoint "pkg.imported_func_ada" message
     83 gdb_breakpoint "imported_func" message
     84 if { [gcc_major_version] < 10 } {
     85     setup_xfail *-*-*
     86 }
     87 gdb_breakpoint "imported_func_ada" message
     88 
     89 gdb_breakpoint "local_imported_func" message
     90 gdb_breakpoint "pkg.exported_func_ada" message
     91 gdb_breakpoint "exported_func_ada" message
     92 gdb_breakpoint "exported_func" message
     93 
     94 gdb_test "print copy" " = 42"
     95