There's something weird about the wait builtin + SIGINT handling in the latest
`devel' branch (i.e. 6374eecf232e70e45fe9c49cc8335e8779c07979)
If you interrupt the second `wait' with C-c, the shell will go into an infinite
loop.
dualbus@debian:~/src/gnu/bash-builds/devel$ cat /tmp/s
#!/bin/bash
: &
wait
sleep inf &
wait
dualbus@debian:~/src/gnu/bash-builds/devel$ ./bash -x /tmp/s
+ wait
+ :
+ wait
+ sleep inf
^C^Z
[1]+ Stopped ./bash -x /tmp/s
dualbus@debian:~/src/gnu/bash-builds/devel$ kill -6 %%
[1]+ Stopped ./bash -x /tmp/s
dualbus@debian:~/src/gnu/bash-builds/devel$ fg
./bash -x /tmp/s
Aborted (core dumped)
(I suspended the process and killed it with SIGABRT to get a nice stack trace).
Core was generated by `./bash -x /tmp/s'.
Program terminated with signal SIGABRT, Aborted.
#0 wait_sigint_handler (sig=2) at ../../bash/jobs.c:2527
2527 {
(gdb) bt
#0 wait_sigint_handler (sig=2) at ../../bash/jobs.c:2527
#1 <signal handler called>
#2 0x00007fcbc52e4fba in __GI___waitpid (pid=-1, stat_loc=0x7ffc4d9ec21c,
options=0) at ../sysdeps/unix/sysv/linux/waitpid.c:29
#3 0x0000563ed5620317 in waitchld (wpid=8312, block=1) at
../../bash/jobs.c:3566
#4 0x0000563ed561e6a7 in wait_for (pid=8312) at ../../bash/jobs.c:2772
#5 0x0000563ed561db90 in wait_for_single_pid (pid=8312, flags=1) at
../../bash/jobs.c:2393
#6 0x0000563ed561df8b in wait_for_background_pids () at
../../bash/jobs.c:2461
#7 0x0000563ed5678220 in wait_builtin (list=0x0) at
../../../bash/builtins/../../../bash/builtins/wait.def:171
#8 0x0000563ed5609ad2 in execute_builtin (builtin=0x563ed56780c7
<wait_builtin>, words=0x563ed6ec7b48, flags=0, subshell=0) at
../../bash/execute_cmd.c:4609
#9 0x0000563ed560aa32 in execute_builtin_or_function (words=0x563ed6ec7b48,
builtin=0x563ed56780c7 <wait_builtin>, var=0x0, redirects=0x0,
fds_to_close=0x563ed6ec3e08, flags=0)
at ../../bash/execute_cmd.c:5107
#10 0x0000563ed56093b4 in execute_simple_command
(simple_command=0x563ed6ec7a08, pipe_in=-1, pipe_out=-1, async=0,
fds_to_close=0x563ed6ec3e08) at ../../bash/execute_cmd.c:4395
#11 0x0000563ed5602ac8 in execute_command_internal (command=0x563ed6ec7ec8,
asynchronous=0, pipe_in=-1, pipe_out=-1, fds_to_close=0x563ed6ec3e08) at
../../bash/execute_cmd.c:811
#12 0x0000563ed5601fe4 in execute_command (command=0x563ed6ec7ec8) at
../../bash/execute_cmd.c:393
#13 0x0000563ed55eb51c in reader_loop () at ../../bash/eval.c:172
#14 0x0000563ed55e8fd1 in main (argc=3, argv=0x7ffc4d9ecb38,
env=0x7ffc4d9ecb58) at ../../bash/shell.c:794
--
Eduardo Bustamante
https://dualbus.me/
