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      1 # Copyright 2019-2024 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 # This test covers a case where SIGSTOP has been configured to be
     17 # passed to the target with GDB's 'handle' command, and then a
     18 # multi-threaded inferior encounters an event that causes all threads
     19 # to be stopped.
     20 #
     21 # The problem that (used) to exist was that GDB would see the SIGSTOP,
     22 # but decide to ignore the signal based on the handle table.
     23 
     24 standard_testfile
     25 
     26 if {[prepare_for_testing "failed to prepare" \
     27 	 "${testfile}" "${srcfile}" {debug pthreads}]} {
     28     return -1
     29 }
     30 
     31 if {![runto_main]} {
     32     return 0
     33 }
     34 
     35 # Have SIGSTOP sent to the inferior.
     36 gdb_test "handle SIGSTOP nostop noprint pass" \
     37     [multi_line \
     38 	 "Signal\[ \t\]+Stop\[ \t\]+Print\[ \t\]+Pass to program\[ \t\]+Description" \
     39 	 "SIGSTOP\[ \t\]+No\[ \t\]+No\[ \t\]+Yes\[ \t\]+Stopped \\(signal\\)"]
     40 
     41 # Create a breakpoint, and when we hit it automatically finish the
     42 # current frame.
     43 gdb_breakpoint breakpt
     44 
     45 # When the bug triggers this continue never completes.  GDB hits the
     46 # breakpoint in thread 1, and then tries to stop the second thread by
     47 # sending it SIGSTOP.  GDB sees the SIGSTOP arrive in thread 2 but
     48 # incorrect decides to pass the SIGSTOP to the thread rather than
     49 # bringing the thread to a stop.
     50 gdb_continue_to_breakpoint breakpt
     51