SIGTERM, SIGSEGV, SIGINT, SIGILL, SIGABRT, SIGFPE

< c‎ | program
 
C
 
Program support utilities
Program termination
Communicating with the environment
Signals
Signal types
SIGABRTSIGFPESIGILLSIGINTSIGSEGVSIGTERM
Non-local jumps
Types
 
Defined in header <signal.h>
#define SIGTERM /*implementation defined*/
#define SIGSEGV /*implementation defined*/
#define SIGINT /*implementation defined*/
#define SIGILL /*implementation defined*/
#define SIGABRT /*implementation defined*/
#define SIGFPE /*implementation defined*/

Each of the above macro constants expands to an integer constant expression with distinct values, which represent different signals sent to the program.

Constant Explanation
SIGTERM termination request, sent to the program
SIGSEGV invalid memory access (segmentation fault)
SIGINT external interrupt, usually initiated by the user
SIGILL invalid program image, such as invalid instruction
SIGABRT abnormal termination condition, as is e.g. initiated by abort()
SIGFPE erroneous arithmetic operation such as divide by zero

References

  • C11 standard (ISO/IEC 9899:2011):
  • 7.14/3 Signal handling <signal.h> (p: 265)
  • C99 standard (ISO/IEC 9899:1999):
  • 7.14/3 Signal handling <signal.h> (p: 246)
  • C89/C90 standard (ISO/IEC 9899:1990):
  • 4.7 SIGNAL HANDLING <signal.h>

See also

 sets a signal handler for particular signal
(function)
runs the signal handler for particular signal
(function)