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      1 # Copyright 2023-2024 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 # Test that after an exec of a non-leader thread, we don't leave the
     17 # non-leader thread listed in internal thread lists, causing problems.
     18 
     19 standard_testfile .c
     20 
     21 proc do_test { } {
     22     if [prepare_for_testing "failed to prepare" $::testfile $::srcfile {debug pthreads}] {
     23 	return -1
     24     }
     25 
     26     if ![runto_main] {
     27 	return
     28     }
     29 
     30     gdb_test "catch exec" "Catchpoint $::decimal \\(exec\\)"
     31 
     32     gdb_test "continue" "Catchpoint $::decimal .*" "continue until exec"
     33 
     34     # Confirm we only have one thread in the thread list.
     35     gdb_test "p \$_inferior_thread_count" " = 1"
     36 
     37     # Get the post-exec thread number.  Due to PR gdb/31069 ("Zombie
     38     # leader detection racy") this isn't always thread 1.1.
     39     set cur_thr [get_integer_valueof "\$_thread" 0]
     40 
     41     if {[istarget *-*-linux*] && [gdb_protocol_is_native]} {
     42 	# Confirm there's only one LWP in the list as well, and that
     43 	# it is bound to the existing GDB thread.
     44 	set inf_pid [get_inferior_pid]
     45 	gdb_test_multiple "maint info linux-lwps" "" {
     46 	    -wrap -re "Thread ID *\r\n$inf_pid\.$inf_pid\.0\[ \t\]+1\.$cur_thr *" {
     47 		pass $gdb_test_name
     48 	    }
     49 	}
     50     }
     51 
     52     # Test that GDB is able to kill the inferior.  This used to crash
     53     # on native Linux as GDB did not dispose of the pre-exec LWP for
     54     # the non-leader (and that LWP did not have a matching thread in
     55     # the core thread list).
     56     gdb_test "with confirm off -- kill" \
     57 	"\\\[Inferior 1 (.*) killed\\\]" \
     58 	"kill inferior"
     59 }
     60 
     61 do_test
     62