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fix aliasing violations in fgetpos/fsetpos
[musl]
/
src
/
exit
/
exit.c
diff --git
a/src/exit/exit.c
b/src/exit/exit.c
index
e4932b5
..
bf7835a
100644
(file)
--- a/
src/exit/exit.c
+++ b/
src/exit/exit.c
@@
-1,32
+1,34
@@
#include <stdlib.h>
#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
+#include <stdint.h>
#include "libc.h"
#include "libc.h"
-#include "atomic.h"
-#include "syscall.h"
static void dummy()
{
}
static void dummy()
{
}
-/* __toread.c, __towrite.c, and atexit.c override these */
+/* atexit.c and __stdio_exit.c override these. the latter is linked
+ * as a consequence of linking either __toread.c or __towrite.c. */
weak_alias(dummy, __funcs_on_exit);
weak_alias(dummy, __funcs_on_exit);
-weak_alias(dummy, __
flush_on
_exit);
-weak_alias(dummy, _
_seek_on_exit
);
+weak_alias(dummy, __
stdio
_exit);
+weak_alias(dummy, _
fini
);
-_Noreturn void exit(int code)
+__attribute__((__weak__, __visibility__("hidden")))
+extern void (*const __fini_array_start)(void), (*const __fini_array_end)(void);
+
+static void libc_exit_fini(void)
{
{
- static int lock;
+ uintptr_t a = (uintptr_t)&__fini_array_end;
+ for (; a>(uintptr_t)&__fini_array_start; a-=sizeof(void(*)()))
+ (*(void (**)())(a-sizeof(void(*)())))();
+ _fini();
+}
- /* If more than one thread calls exit, hang until _Exit ends it all */
- while (a_swap(&lock, 1)) __syscall(SYS_pause);
+weak_alias(libc_exit_fini, __libc_exit_fini);
+_Noreturn void exit(int code)
+{
__funcs_on_exit();
__funcs_on_exit();
- if (libc.fini) libc.fini();
- if (libc.ldso_fini) libc.ldso_fini();
- __flush_on_exit();
- __seek_on_exit();
-
+ __libc_exit_fini();
+ __stdio_exit();
_Exit(code);
_Exit(code);
- for(;;);
}
}