abort(3)

abort3

Cause abnormal program termination

Usage

#include <stdlib.h>

void

abort(void);

Library

Standard C Library (libc, -lc)

Overview

The abort() function causes abnormal program termination to occur, unless the signal SIGABRT is being caught and the signal handler does not return.

Any open streams are flushed and closed.

Implementation notes

The abort() function is thread-safe. It is unknown if it is async-cancel-safe.

Return values

The abort() function never returns.

Releases

87 releases since FreeBSD 2.0.5-RELEASE; the text changed 40 times.

  1. 2.0.5
  2. 2.1.5–2.1.7.1
  3. 2.2.2–3.4
  4. 3.5–3.5.1
  5. 4.0
  6. 4.1–4.4
  7. 4.5–4.11
  8. 5.0–6.3
  9. 6.4
  10. 7.0
  11. 7.1
  12. 7.2
  13. 7.3
  14. 7.4
  15. 8.0
  16. 8.1
  17. 8.2
  18. 8.3
  19. 8.4
  20. 9.0
  21. 9.1
  22. 9.2
  23. 9.3
  24. 10.0
  25. 10.1
  26. 10.2
  27. 10.3
  28. 10.4
  29. 11.0
  30. 11.1
  31. 11.2
  32. 11.3
  33. 11.4
  34. 12.0
  35. 12.1
  36. 12.2
  37. 12.3
  38. 12.4
  39. 13.0–13.2
  40. 13.3–14.5
  41. 15.0–16.0

Standards

The abort() function conforms to ISO/IEC 9945-1:1990 (“POSIX.1”). The abort() function also conforms to ISO/IEC 9899:1999 (“ISO C99”) with the implementation specific details as noted above.

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.