SIGABRT 是从哪里来的

SIGABRT 是 iOS 开发经常遇到的一种错误信息，这个信息是什么含义？在哪里定义？通常由虾米问题引起？怎样解决？本文尝试对这些问题给出答案。

#define SIGHUP 1/* hangup */

#define SIGINT 2/* interrupt */

#define SIGQUIT 3/* quit */

#define SIGILL 4/* illegal instruction (not reset when caught) */

#define SIGTRAP 5/* trace trap (not reset when caught) */

#define SIGABRT 6/* abort() */

#if  (defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE))

#define SIGPOLL 7/* pollable event ([XSR] generated, not supported) */

#else /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */

#define SIGIOT SIGABRT /* compatibility */

#define SIGEMT 7/* EMT instruction */

#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */

#define SIGFPE 8/* floating point exception */

#define SIGKILL 9/* kill (cannot be caught or ignored) */

#define SIGBUS 10/* bus error */

#define SIGSEGV 11/* segmentation violation */

#define SIGSYS 12/* bad argument to system call */

#define SIGPIPE 13/* write on a pipe with no one to read it */

#define SIGALRM 14/* alarm clock */

#define SIGTERM 15/* software termination signal from kill */

#define SIGURG 16/* urgent condition on IO channel */

#define SIGSTOP 17/* sendable stop signal not from tty */

#define SIGTSTP 18/* stop signal from tty */

#define SIGCONT 19/* continue a stopped process */

#define SIGCHLD 20/* to parent on child stop or exit */

#define SIGTTIN 21/* to readers pgrp upon background tty read */

#define SIGTTOU 22/* like TTIN for output if (tp->t_local&LTOSTOP) */

#if  (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))

#define SIGIO 23/* input/output possible signal */

#endif

#define SIGXCPU 24/* exceeded CPU time limit */

#define SIGXFSZ 25/* exceeded file size limit */

#define SIGVTALRM 26/* virtual time alarm */

#define SIGPROF 27/* profiling time alarm */

#if  (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))

#define SIGWINCH 28/* window size changes */

#define SIGINFO 29/* information request */

#endif

#define SIGUSR1 30/* user defined signal 1 */

#define SIGUSR2 31/* user defined signal 2 */