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Message-ID: <20231012183148.GD1427497@port70.net>
Date: Thu, 12 Oct 2023 20:31:48 +0200
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: [PATCH] make __getauxval a public ABI symbol
This is needed so that libgcc can access AT_HWCAP without violating
link namespace rules.
Internally musl already used __getauxval symbol for the same reason,
we just remove the hidden marking.
Currently libgcc only uses __getauxval on aarch64 for outline atomics
and only on glibc, but there is plan to add more usage (this time in
the unwinder) which may cause link failure on musl in the future.
(libgcc cannot easily check for libc symbols due to bootstrap order,
the feature could be unconditionally disabled for *-linux-musl, but
it's probably more future proof to provide the symbol.)
---
src/include/sys/auxv.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/include/sys/auxv.h b/src/include/sys/auxv.h
index 9358a4a5..63c5bfe9 100644
--- a/src/include/sys/auxv.h
+++ b/src/include/sys/auxv.h
@@ -5,6 +5,6 @@
#include <features.h>
-hidden unsigned long __getauxval(unsigned long);
+unsigned long __getauxval(unsigned long);
#endif
--
2.41.0
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