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stdlib: assert on NULL function pointer in atexit etc. [BZ #20544]

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Paul Pluzhnikov
2018-09-01 10:50:41 -07:00
parent 15b8d67e29
commit 8e67b39eb4
5 changed files with 133 additions and 1 deletions
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4
stdlib/cxa_atexit.c
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@@ -36,6 +36,10 @@ __internal_atexit (void (*func) (void *), void *arg, void *d,
{
struct exit_function *new;
/* As a QoI issue we detect NULL early with an assertion instead
of a SIGSEGV at program exit when the handler is run (bug 20544). */
assert (func != NULL);
__libc_lock_lock (__exit_funcs_lock);
new = __new_exitfn (listp);