From 88677348b4de73874ca7d5a47451f42880f65f07 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Netto Date: Tue, 27 Dec 2022 18:11:42 -0300 Subject: Move libc_freeres_ptrs and libc_subfreeres to hidden/weak functions They are both used by __libc_freeres to free all library malloc allocated resources to help tooling like mtrace or valgrind with memory leak tracking. The current scheme uses assembly markers and linker script entries to consolidate the free routine function pointers in the RELRO segment and to be freed buffers in BSS. This patch changes it to use specific free functions for libc_freeres_ptrs buffers and call the function pointer array directly with call_function_static_weak. It allows the removal of both the internal macros and the linker script sections. Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Carlos O'Donell --- rt/aio_misc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'rt') diff --git a/rt/aio_misc.c b/rt/aio_misc.c index cde3de8b7f..49ec0aa293 100644 --- a/rt/aio_misc.c +++ b/rt/aio_misc.c @@ -694,7 +694,11 @@ handle_fildes_io (void *arg) /* Free allocated resources. */ -libc_freeres_fn (free_res) +#if !PTHREAD_IN_LIBC +__attribute__ ((__destructor__)) static +#endif +void +__aio_freemem (void) { size_t row; -- cgit 1.4.1