gdb/testsuite/gdb.tui/tui-missing-src.exp

   1 # Copyright 2020-2022 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 test checks if gdb can handle missing source files gracefully.
  17 # Testing steps are:
  18 # 1. Have a main() in main.c that calls an external function f2().
  19 # 2. Have f2() implemented in f2.c.
  20 # 3. Build the two files into one executable.
  21 # 4. Remove main.c.
  22 # 5. Open the executable inside gdb while having gdb in source layout.
  23 #    No source is found for the moment.
  24 # 6. After a little bit of playing, we enter f2() and now the source
  25 #    layout must show the contents of f2.c.
  26 # 7. Going back to main() shall result in no contents again.
  27
  28 tuiterm_env
  29
  30 standard_testfile
  31
  32 set mainfile [standard_output_file main.c]
  33 set f2file   [standard_output_file f2.c]
  34 set srcfiles [list $mainfile $f2file]
  35
  36 # Step 1: Write the main.c file into the output directory.
  37 # This file will be removed after compilation.
  38 set fd [open "$mainfile" w]
  39 puts $fd {
  40 extern int f2(int);
  41 int
  42 main ()
  43 {
  44   int a = 4;
  45   a = f2(a);
  46   return a - a;
  47 }
  48 }
  49 close $fd
  50
  51 # Step 2: Write the f2.c file into the output directory.
  52 set fd [open "$f2file" w]
  53 puts $fd {
  54 int
  55 f2 (int x)
  56 {
  57   x <<= 1;
  58   return x+5;
  59 }
  60 }
  61 close $fd
  62
  63 # Step 3: Compile the source files.
  64 if  { [gdb_compile "${srcfiles}" "${binfile}" \
  65            executable {debug additional_flags=-O0}] != "" } {
  66     untested "failed to compile"
  67     return -1
  68 }
  69
  70 # Step 4: Remove the main.c file.
  71 file delete $mainfile
  72
  73 # Step 5: Load the executable into GDB.
  74 # There shall be no source content.
  75 Term::clean_restart 24 80 $testfile
  76 if {![Term::enter_tui]} {
  77     unsupported "TUI not supported"
  78     return
  79 }
  80 # There must exist a source layout with the size 80x15 and
  81 # there should be nothing in it.
  82 Term::check_box_contents "check source box is empty" \
  83     0 0 80 15 "No Source Available"
  84
  85 # Step 6: Go to main and after one next, enter f2().
  86 Term::command "set pagination off"
  87 Term::command "start"
  88 Term::command "next"
  89 Term::command "step"
  90 Term::check_contents "checking if inside f2 ()" "f2 \\(x=4\\)"
  91 Term::check_box_contents "f2.c must be displayed in source window" \
  92     0 0 80 15 "return x\\+5"
  93
  94 # Step 7: Back in main
  95 Term::command "finish"
  96 Term::check_box_contents "check source box is empty after return" \
  97     0 0 80 15 "No Source Available"
  98 Term::check_contents "Back in main" "Value returned is .* 13"