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common: don't crash on send_backtrace() if bt_print is NULL.

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This (and bt_exit) are NULL for libplugin.  We don't always want to crash!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2025-01-23 09:38:29 +10:30
parent fd7ac4e05b
commit 89ca5aef9f
1 changed files with 5 additions and 1 deletions
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6
common/daemon.c
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@ -32,6 +32,9 @@ void send_backtrace(const char *why)
if (backtrace_state)
backtrace_print(backtrace_state, 0, stderr);
if (!bt_print)
return;
/* Now send to parent. */
bt_print("%s (version %s)", why, version());
if (backtrace_state)
@ -75,7 +78,8 @@ static void crashdump(int sig)
send_backtrace(why);
/* Probably shouldn't return. */
bt_exit();
if (bt_exit)
bt_exit();
/* This time it will kill us instantly. */
kill(getpid(), sig);