From f753049a50132a23849ef89a8af5ff86ad595c25 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Fri, 14 Oct 2011 23:00:24 -0400 Subject: [PATCH] simplify atexit and fflush-on-exit handling --- src/exit/atexit.c | 5 +---- src/exit/exit.c | 11 +++++++---- src/stdio/__towrite.c | 5 ++++- 3 files changed, 12 insertions(+), 9 deletions(-) diff --git a/src/exit/atexit.c b/src/exit/atexit.c index 49c060e6..6f00e374 100644 --- a/src/exit/atexit.c +++ b/src/exit/atexit.c @@ -12,18 +12,15 @@ static struct fl void (*f[COUNT])(void); } builtin, *head; -static int run_atexit_functions(void) +void __funcs_on_exit() { int i; for (; head; head=head->next) { for (i=COUNT-1; i>=0 && !head->f[i]; i--); for (; i>=0; i--) head->f[i](); } - return 0; } -int (*const __funcs_on_exit)(void) = run_atexit_functions; - int atexit(void (*func)(void)) { static int lock; diff --git a/src/exit/exit.c b/src/exit/exit.c index bfdb3923..1ff19dbe 100644 --- a/src/exit/exit.c +++ b/src/exit/exit.c @@ -3,8 +3,11 @@ #include #include "libc.h" -/* __overflow.c and atexit.c override these */ -static int (*const dummy)() = 0; +static void dummy() +{ +} + +/* __towrite.c and atexit.c override these */ weak_alias(dummy, __funcs_on_exit); weak_alias(dummy, __fflush_on_exit); @@ -16,8 +19,8 @@ void exit(int code) LOCK(&lock); /* Only do atexit & stdio flush if they were actually used */ - if (__funcs_on_exit) __funcs_on_exit(); - if (__fflush_on_exit) __fflush_on_exit((void *)0); + __funcs_on_exit(); + __fflush_on_exit(); /* Destructor s**t is kept separate from atexit to avoid bloat */ if (libc.fini) libc.fini(); diff --git a/src/stdio/__towrite.c b/src/stdio/__towrite.c index b4587419..4bf96f4d 100644 --- a/src/stdio/__towrite.c +++ b/src/stdio/__towrite.c @@ -18,4 +18,7 @@ int __towrite(FILE *f) } /* Link flush-on-exit code iff any stdio write functions are linked. */ -int (*const __fflush_on_exit)(FILE *) = fflush; +void __fflush_on_exit() +{ + fflush(0); +} -- 2.25.1