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 # Check if start command is supported.
  29 require use_gdb_stub 0
  30
  31 tuiterm_env
  32
  33 standard_testfile
  34
  35 set mainfile [standard_output_file main.c]
  36 set f2file   [standard_output_file f2.c]
  37 set srcfiles [list $mainfile $f2file]
  38
  39 # Step 1: Write the main.c file into the output directory.
  40 # This file will be removed after compilation.
  41 set fd [open "$mainfile" w]
  42 puts $fd {
  43 extern int f2(int);
  44 int
  45 main ()
  46 {
  47   int a = 4;
  48   a = f2(a);
  49   return a - a;
  50 }
  51 }
  52 close $fd
  53
  54 # Step 2: Write the f2.c file into the output directory.
  55 set fd [open "$f2file" w]
  56 puts $fd {
  57 int
  58 f2 (int x)
  59 {
  60   x <<= 1;
  61   return x+5;
  62 }
  63 }
  64 close $fd
  65
  66 # Step 3: Compile the source files.
  67 if  { [gdb_compile "${srcfiles}" "${binfile}" \
  68            executable {debug additional_flags=-O0}] != "" } {
  69     untested "failed to compile"
  70     return -1
  71 }
  72
  73 # Step 4: Remove the main.c file.
  74 file delete $mainfile
  75
  76 # Step 5: Load the executable into GDB.
  77 # There shall be no source content.
  78 Term::clean_restart 24 80 $testfile
  79 if {![Term::enter_tui]} {
  80     unsupported "TUI not supported"
  81     return
  82 }
  83 # There must exist a source layout with the size 80x15 and
  84 # there should be nothing in it.
  85 Term::check_box_contents "check source box is empty" \
  86     0 0 80 15 "No Source Available"
  87
  88 # Step 6: Go to main and after one next, enter f2().
  89 Term::command "set pagination off"
  90 Term::command "start"
  91 Term::command "next"
  92 Term::command "step"
  93 Term::check_contents "checking if inside f2 ()" "f2 \\(x=4\\)"
  94 Term::check_box_contents "f2.c must be displayed in source window" \
  95     0 0 80 15 "return x\\+5"
  96
  97 # Step 7: Back in main
  98 Term::command "finish"
  99 Term::check_box_contents "check source box is empty after return" \
 100     0 0 80 15 "No Source Available"
 101 Term::check_contents "Back in main" "Value returned is .* 13"