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Bug 20198: quick_exit should not call destructors.

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In C++11 18.5.12 says "Objects shall not be destroyed as a
result of calling quick_exit." In C11 quick_exit is silent
about thread object destruction. Therefore to make glibc
C++ compliant we do not call any thread local destructors.
A new regression test verifies the fix.

I will note that C++11 18.5.3 makes it clear that C++
defines additional requirements for _Exit() to prevent it
from executing destructors.

Given that the point of _Exit() is to terminate the process
immediately it makes sense the C and C++ should line up
and avoid calling destructors.

No failures. New regtest passes.
This commit is contained in:
Carlos O'Donell
2016-06-06 14:20:58 -04:00
parent 3f61232ab3
commit 47dd3543d3
37 changed files with 216 additions and 9 deletions
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5
stdlib/exit.h
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@ -63,8 +63,9 @@ extern struct exit_function_list *__quick_exit_funcs attribute_hidden;
extern struct exit_function *__new_exitfn (struct exit_function_list **listp);
extern uint64_t __new_exitfn_called attribute_hidden;
extern void __run_exit_handlers (int status, struct exit_function_list **listp,
bool run_list_atexit)
extern void __run_exit_handlers (int status,
struct exit_function_list **listp,
bool run_list_atexit, bool run_dtors)
attribute_hidden __attribute__ ((__noreturn__));
extern int __internal_atexit (void (*func) (void *), void *arg, void *d,