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-rw-r--r--sysdeps/pthread/Makefile3
-rw-r--r--sysdeps/pthread/call_once.c11
2 files changed, 11 insertions, 3 deletions
diff --git a/sysdeps/pthread/Makefile b/sysdeps/pthread/Makefile
index 8133bcd..adb4815 100644
--- a/sysdeps/pthread/Makefile
+++ b/sysdeps/pthread/Makefile
@@ -32,7 +32,6 @@ headers += threads.h
routines += thrd_current thrd_equal thrd_sleep thrd_yield
libpthread-routines += thrd_create thrd_detach thrd_exit thrd_join \
- call_once \
mtx_destroy mtx_init mtx_lock mtx_timedlock \
mtx_trylock mtx_unlock \
cnd_broadcast \
@@ -40,7 +39,7 @@ libpthread-routines += thrd_create thrd_detach thrd_exit thrd_join \
tss_create tss_delete tss_get tss_set
$(libpthread-routines-var) += \
-
+ call_once \
tests += tst-cnd-basic tst-mtx-trylock tst-cnd-broadcast \
tst-cnd-timedwait tst-thrd-detach tst-mtx-basic tst-thrd-sleep \
diff --git a/sysdeps/pthread/call_once.c b/sysdeps/pthread/call_once.c
index 9690530..0847dbc 100644
--- a/sysdeps/pthread/call_once.c
+++ b/sysdeps/pthread/call_once.c
@@ -17,11 +17,12 @@
<https://www.gnu.org/licenses/>. */
#include <stdalign.h>
+#include <shlib-compat.h>
#include "thrd_priv.h"
void
-call_once (once_flag *flag, void (*func)(void))
+__call_once (once_flag *flag, void (*func)(void))
{
_Static_assert (sizeof (once_flag) == sizeof (pthread_once_t),
"sizeof (once_flag) != sizeof (pthread_once_t)");
@@ -29,3 +30,11 @@ call_once (once_flag *flag, void (*func)(void))
"alignof (once_flag) != alignof (pthread_once_t)");
__pthread_once ((pthread_once_t *) flag, func);
}
+#if PTHREAD_IN_LIBC
+versioned_symbol (libc, __call_once, call_once, GLIBC_2_34);
+# if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_28, GLIBC_2_34)
+compat_symbol (libpthread, __call_once, call_once, GLIBC_2_28);
+# endif
+#else /* !PTHREAD_IN_LIBC */
+strong_alias (__call_once, call_once)
+#endif