Specifies the action to be taken when a program is abnormally terminated.


Do not use the abort function to shut down a Microsoft Store app, except in testing or debugging scenarios. Programmatic or UI ways to close a Store app are not permitted according to the Microsoft Store policies. For more information, see UWP app lifecycle.


unsigned int _set_abort_behavior(
   unsigned int flags,
   unsigned int mask


[in] flags
New value of the abort flags.

[in] mask
Mask for the abort flags bits to set.

Return Value

The old value of the flags.


There are two abort flags: _WRITE_ABORT_MSG and _CALL_REPORTFAULT. _WRITE_ABORT_MSG determines whether a helpful text message is printed when a program is abnormally terminated. The message states that the application has called the abort function. The default behavior is to print the message. _CALL_REPORTFAULT, if set, specifies that a Watson crash dump is generated and reported when abort is called. By default, crash dump reporting is enabled in non-DEBUG builds.


Routine Required header
_set_abort_behavior <stdlib.h>

For more compatibility information, see Compatibility.


// crt_set_abort_behavior.c
// compile with: /TC
#include <stdlib.h>

int main()
   printf("Suppressing the abort message. If successful, this message"
          " will be the only output.\n");
   // Suppress the abort message
   _set_abort_behavior( 0, _WRITE_ABORT_MSG);
Suppressing the abort message. If successful, this message will be the only output.

See also