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libs/libc/stdlib: Raise SIGABRT in abort(). #20634

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Merged
xiaoxiang781216 merged 1 commit into from
Oct 14, 2026
Merged

libs/libc/stdlib: Raise SIGABRT in abort(). #20634

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32 changes: 26 additions & 6 deletions libs/libc/stdlib/lib_abort.c
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Original file line number Diff line number Diff line change
Expand Up @@ -26,8 +26,11 @@

#include <nuttx/config.h>

#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <unistd.h>

/****************************************************************************
* Public Functions
Expand Down Expand Up @@ -60,12 +63,29 @@

void abort(void)
{
/* NuttX does not support standard signal functionality (like the
* behavior of the SIGABRT signal). So no attempt is made to provide
* a conformant version of abort() at this time. This version does not
* signal the calling thread all.
*
* _exit() will close all open files and terminate the thread.
#ifdef CONFIG_ENABLE_ALL_SIGNALS
struct sigaction act;
sigset_t set;

/* Unblock SIGABRT and raise it: a handler can catch it */

sigemptyset(&set);
sigaddset(&set, SIGABRT);
sigprocmask(SIG_UNBLOCK, &set, NULL);
raise(SIGABRT);

/* The handler returned, or SIGABRT is ignored: restore the default
* action and raise SIGABRT again.
*/

memset(&act, 0, sizeof(act));
act.sa_handler = SIG_DFL;
sigaction(SIGABRT, &act, NULL);
raise(SIGABRT);
#endif

/* SIGABRT has no default action, or signals are not enabled. _exit()
* closes all open files and terminates the process.
*/

_exit(EXIT_FAILURE);
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