From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
To: libc-alpha@sourceware.org
Subject: [COMMITTED] elf: hidden visibility for __minimal_malloc functions
Date: Tue, 16 Nov 2021 16:04:58 -0300 [thread overview]
Message-ID: <20211116190458.2332378-1-adhemerval.zanella@linaro.org> (raw)
Since b05fae4d8e34, __minimal malloc code is used during static
startup before PIE self-relocation (_dl_relocate_static_pie).
So it requires the same fix done for other objects by 47618209d05a.
Checked on aarch64, x86_64, and i686 with and without static-pie.
---
elf/dl-minimal-malloc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/elf/dl-minimal-malloc.c b/elf/dl-minimal-malloc.c
index 939b5271ca..ea9bca26cf 100644
--- a/elf/dl-minimal-malloc.c
+++ b/elf/dl-minimal-malloc.c
@@ -17,6 +17,11 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
+/* Mark symbols hidden in static PIE for early self relocation to work.
+ Note: string.h may have ifuncs which cannot be hidden on i686. */
+#if BUILD_PIE_DEFAULT
+# pragma GCC visibility push(hidden)
+#endif
#include <assert.h>
#include <string.h>
#include <ldsodefs.h>
--
2.32.0
reply other threads:[~2021-11-16 19:05 UTC|newest]
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