/* This function will be called during normal program termination
* to run the destructors that are listed in the .fini_array section
* of the executable, if any.
*
* 'fini_array' points to a list of function addresses. The first
* entry in the list has value -1, the last one has value 0.
*/
void __libc_fini(void* array) {
typedef void (*Dtor)();
Dtor* fini_array = reinterpret_cast<Dtor*>(array);
const Dtor minus1 = reinterpret_cast<Dtor>(static_cast<uintptr_t>(-1));
// Sanity check - first entry must be -1.
if (array == NULL || fini_array[0] != minus1) {
return;
}
// Skip over it.
fini_array += 1;
// Count the number of destructors.
int count = 0;
while (fini_array[count] != NULL) {
++count;
}
// Now call each destructor in reverse order.
while (count > 0) {
Dtor dtor = fini_array[--count];
// Sanity check, any -1 in the list is ignored.
if (dtor == minus1) {
continue;
}
dtor();
}
#ifndef LIBC_STATIC
{
extern void __libc_postfini(void) __attribute__((weak));
if (__libc_postfini) {
__libc_postfini();
}
}
#endif
}
/* This function will be called during normal program termination
* to run the destructors that are listed in the .fini_array section
* of the executable, if any.
*
* 'fini_array' points to a list of function addresses. The first
* entry in the list has value -1, the last one has value 0.
*/
void __libc_fini(void* array) {
void** fini_array = reinterpret_cast<void**>(array);
const size_t minus1 = ~(size_t)0; /* ensure proper sign extension */
/* Sanity check - first entry must be -1 */
if (array == NULL || (size_t)fini_array[0] != minus1) {
return;
}
/* skip over it */
fini_array += 1;
/* Count the number of destructors. */
int count = 0;
while (fini_array[count] != NULL) {
++count;
}
/* Now call each destructor in reverse order. */
while (count > 0) {
void (*func)() = (void (*)()) fini_array[--count];
/* Sanity check, any -1 in the list is ignored */
if ((size_t)func == minus1) {
continue;
}
func();
}
#ifndef LIBC_STATIC
{
extern void __libc_postfini(void) __attribute__((weak));
if (__libc_postfini) {
__libc_postfini();
}
}
#endif
}