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Call thread finalizers on exit()

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While we don't call POSIX thread key destructors from exit(), we do need
to call these, since C++ uses it for TLS object destructors.

See #1076
This commit is contained in:
Justine Tunney 2024-01-08 11:45:02 -08:00
parent 07db3004d6
commit 81ce2e4cbc
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GPG key ID: BE714B4575D6E328
5 changed files with 56 additions and 22 deletions
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14
libc/runtime/exit.c
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@ -17,6 +17,7 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/cxxabi.h"
#include "libc/intrin/cxaatexit.internal.h"
#include "libc/intrin/strace.internal.h"
#include "libc/intrin/weaken.h"
#include "libc/runtime/internal.h"
@ -36,13 +37,24 @@
* @noreturn
*/
wontreturn void exit(int exitcode) {
const uintptr_t *p;
STRACE("exit(%d)", exitcode);
// call thread local c++ object destructors
if (_weaken(__cxa_thread_finalize)) {
_weaken(__cxa_thread_finalize)();
}
// call atexit() and __cxa_atexit() destructors
if (_weaken(__cxa_finalize)) {
_weaken(__cxa_finalize)(NULL);
}
// call __destructor__ and finiarray destructors
const uintptr_t *p;
for (p = __fini_array_end; p > __fini_array_start;) {
((void (*)(void))(*--p))();
}
// terminate process
_Exit(exitcode);
}