gdb/testsuite/gdb.base/print-internal-string.exp

   1 # Copyright 2023 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 different ways in which GDB can create a string and then push
  17 # that string into the inferior before reading it back.  Check that
  18 # the thing that is read back is correctly interpreted as a string.
  19
  20 standard_testfile
  21
  22 if { [prepare_for_testing "failed to prepare" $testfile $srcfile] } {
  23     return -1
  24 }
  25
  26 if {![runto_main]} {
  27     return 0
  28 }
  29
  30 if [allow_python_tests] {
  31     # The $_as_string convenience function is implemented in Python.
  32     gdb_test {printf "%s\n", $_as_string("aabbcc")} "\"aabbcc\""
  33
  34     # Create a gdb.Value object for a string.  Take its address (which
  35     # forces it into the inferior), and then print the address as a
  36     # string.
  37     gdb_test_no_output {python addr = gdb.Value("ccbbaa").address}
  38     gdb_test {python gdb.execute("x/1s 0x%x" % addr)} \
  39         "$hex <arena>:\\s+\"ccbbaa\""
  40
  41     # Call an inferior function through a gdb.Value object, pass a
  42     # string to the inferior function and ensure it arrives correctly.
  43     gdb_test "p/x take_string" " = $hex.*"
  44     gdb_test_no_output "python func_ptr = gdb.history (0)" \
  45         "place address of take_string into Python variable"
  46     gdb_test "python func_value = func_ptr.dereference()" ""
  47     gdb_breakpoint "take_string"
  48     gdb_test {python result = func_value("qqaazz")} \
  49         "Breakpoint $decimal, take_string \\(str=$hex <arena> \"qqaazz\"\\) at .*"
  50     gdb_test "continue" "Continuing\\."
  51 }
  52
  53 # Use printf on a string parsed by the C expression parser.
  54 gdb_test {printf "%s\n", "ddeeff"} "ddeeff"
  55
  56 # Parse a string in the C expression parser, force it into the
  57 # inferior by taking its address, then print it as a string.
  58 gdb_test {x/1s &"gghhii"} "$hex <arena>:\\s+\"gghhii\""
  59
  60 # Use $_gdb_setting_str and $_gdb_maint_setting_str to create a string
  61 # value, and then print using printf, which forces the string into the
  62 # inferior.
  63 gdb_test {printf "%s\n", $_gdb_setting_str("arch")} "auto"
  64 gdb_test {printf "%s\n", $_gdb_maint_setting_str("bfd-sharing")} "on"