quick_exit

_Noreturn void quick_exit( int exit_code );

[[noreturn]] void quick_exit( int exit_code );

Causes normal program termination to occur without completely cleaning the resources.

Functions passed to at_quick_exit are called in reverse order of their registration. After calling the registered functions, calls _Exit(exit_code).

Functions passed to atexit or signal handlers passed to signal are not called.

Parameters

Return value

(none)

Example

#include <stdlib.h>
#include <stdio.h>
 
void f1(void)
{
    puts("pushed first");
    fflush(stdout);
}
 
void f2(void)
{
    puts("pushed second");
}
 
void f3(void)
{
    puts("won't be called");
}
 
int main(void)
{
    at_quick_exit(f1);
    at_quick_exit(f2);
    atexit(f3);
    quick_exit(0);
}

pushed second
pushed first

References

• C17 standard (ISO/IEC 9899:2018):
• 7.22.4.7 The quick_exit function (p: 257)
• C11 standard (ISO/IEC 9899:2011):
• 7.22.4.7 The quick_exit function (p: 353)

See also