gdb/testsuite/gdb.mi/mi-condbreak-fail.exp

   1 # Copyright (C) 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 # Check that when GDB fails to evaluate the condition of a conditional
  17 # breakpoint we only get one *stopped notification.  In this test case
  18 # the breakpoint condition fails due to receiving a signal (SIGSEGV).
  19
  20 load_lib mi-support.exp
  21 set MIFLAGS "-i=mi"
  22
  23 standard_testfile
  24
  25 if [build_executable ${testfile}.exp ${binfile} ${srcfile}] {
  26     return -1
  27 }
  28
  29 # Create a breakpoint with a condition that invokes an inferior
  30 # function call, that will segfault.  Run until GDB hits the
  31 # breakpoint and check how GDB reports the failed condition check.
  32 #
  33 # UNWIND_ON_SIGNAL is either 'on' or 'off'.  This is used to configure
  34 # GDB's 'set unwindonsignal' setting.
  35
  36 proc run_test { unwind_on_signal } {
  37
  38     if {[mi_clean_restart $::binfile]} {
  39         return
  40     }
  41
  42     if {[mi_runto_main] == -1} {
  43         return
  44     }
  45
  46     mi_gdb_test "-gdb-set unwindonsignal ${unwind_on_signal}" {\^done} \
  47         "set unwind-on-signal"
  48
  49     # Create the conditional breakpoint.
  50     set bp_location [gdb_get_line_number "Set breakpoint here"]
  51     mi_create_breakpoint "-c \"cond_fail ()\" $::srcfile:$bp_location" \
  52         "insert conditional breakpoint" \
  53         -func foo -file ".*$::srcfile" -line "$bp_location" \
  54         -cond "cond_fail \\(\\)"
  55
  56     # Number of the previous breakpoint.
  57     set bpnum [mi_get_valueof "/d" "\$bpnum" "INVALID" \
  58                    "get number for breakpoint"]
  59
  60     # The line where we expect the inferior to crash.
  61     set crash_linenum [gdb_get_line_number "Crash here"]
  62
  63     # Run the inferior and wait for it to stop.
  64     mi_send_resuming_command "exec-continue" "continue the inferior"
  65
  66     if {$unwind_on_signal} {
  67         mi_gdb_test "" \
  68             [multi_line \
  69                  "&\"Error in testing condition for breakpoint $bpnum:\\\\n\"" \
  70                  "&\"The program being debugged received signal SIGSEGV, Segmentation fault\\\\n\"" \
  71                  "&\"while in a function called from GDB\\.  GDB has restored the context\\\\n\"" \
  72                  "&\"to what it was before the call\\.  To change this behavior use\\\\n\"" \
  73                  "&\"\\\\\"set unwindonsignal off\\\\\"\\.  Evaluation of the expression containing\\\\n\"" \
  74                  "&\"the function \\(cond_fail\\) will be abandoned\\.\\\\n\"" \
  75                  "=breakpoint-modified,bkpt={number=\"$bpnum\",type=\"breakpoint\",\[^\r\n\]+times=\"1\",\[^\r\n\]+}" \
  76                  "~\"\\\\n\"" \
  77                  "~\"Breakpoint $bpnum, foo \\(\\) at \[^\r\n\]+/${::srcfile}:${bp_location}\\\\n\"" \
  78                  "~\"${bp_location}\\\\t\[^\r\n\]+Set breakpoint here\\.\[^\r\n\]+\\\\n\"" \
  79                  "\\*stopped,reason=\"breakpoint-hit\",disp=\"keep\",bkptno=\"$bpnum\",frame=\\{addr=\"$::hex\",func=\"foo\"\\,args=\\\[\\\],file=\"\[^\r\n\]+\",fullname=\"\[^\r\n\]+\",line=\"$bp_location\",\[^\r\n\]+}\[^\r\n\]+"] \
  80             "wait for stop"
  81
  82         mi_info_frame "check the current frame" \
  83             -level 0 -func foo -line $bp_location
  84     } else {
  85         mi_gdb_test "" \
  86             [multi_line \
  87                  "~\"\\\\nProgram\"" \
  88                  "~\" received signal SIGSEGV, Segmentation fault\\.\\\\n\"" \
  89                  "~\"$::hex in cond_fail \\(\\) at \[^\r\n\]+\"" \
  90                  "~\"${crash_linenum}\\\\t\\s+return \\*p;\[^\r\n\]+\\\\n\"" \
  91                  "\\*stopped,reason=\"signal-received\",signal-name=\"SIGSEGV\"\[^\r\n\]+frame=\\{addr=\"$::hex\",func=\"cond_fail\",args=\\\[\\\],file=\"\[^\r\n\]+\",fullname=\"\[^\r\n\]+\",line=\"$crash_linenum\",\[^\r\n\]+\\}\[^\r\n\]+" \
  92                  "&\"Error in testing condition for breakpoint $bpnum:\\\\n\"" \
  93                  "&\"The program being debugged was signaled while in a function called from GDB\\.\\\\n\"" \
  94                  "&\"GDB remains in the frame where the signal was received\\.\\\\n\"" \
  95                  "&\"To change this behavior use \\\\\"set unwindonsignal on\\\\\"\\.\\\\n\"" \
  96                  "&\"Evaluation of the expression containing the function\\\\n\"" \
  97                  "&\"\\(cond_fail\\) will be abandoned\\.\\\\n\"" \
  98                  "&\"When the function is done executing, GDB will silently stop\\.\\\\n\"" \
  99                  "=breakpoint-modified,bkpt={number=\"$bpnum\",type=\"breakpoint\",\[^\r\n\]+times=\"1\",\[^\r\n\]+}"] \
 100             "wait for stop"
 101
 102         mi_info_frame "check the current frame" \
 103             -level 0 -func cond_fail -line $crash_linenum
 104     }
 105 }
 106
 107 foreach_with_prefix unwind_on_signal { off on } {
 108     run_test $unwind_on_signal
 109 }