diff options
Diffstat (limited to 'libc/src/stdlib/exit.cpp')
| -rw-r--r-- | libc/src/stdlib/exit.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libc/src/stdlib/exit.cpp b/libc/src/stdlib/exit.cpp index 28a6f8a63c0c..f26d48ac00d7 100644 --- a/libc/src/stdlib/exit.cpp +++ b/libc/src/stdlib/exit.cpp @@ -15,7 +15,21 @@ namespace LIBC_NAMESPACE_DECL { extern "C" void __cxa_finalize(void *); +// exit needs to clean up TLS and call associated destructors. +// TODO: Strictly speaking, it is not valid to call exit in overlay mode +// as we have no way to ensure system libc will call the TLS destructors. +// We should run exit related tests in hermetic mode but this is currently +// blocked by https://github.com/llvm/llvm-project/issues/133925. +extern "C" [[gnu::weak]] void __cxa_thread_finalize(); + +// TODO: use recursive mutex to protect this routine. [[noreturn]] LLVM_LIBC_FUNCTION(void, exit, (int status)) { +// FIXME: The NVPTX target does not support external weak symbols correctly +// despite being an ELF platform. Disable pending a future split. +#if !defined(LIBC_TARGET_ARCH_IS_NVPTX) + if (__cxa_thread_finalize) + __cxa_thread_finalize(); +#endif __cxa_finalize(nullptr); internal::exit(status); } |