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-rw-r--r--sysdeps/generic/symbol-hacks.h7
-rw-r--r--sysdeps/nptl/lowlevellock.h4
2 files changed, 9 insertions, 2 deletions
diff --git a/sysdeps/generic/symbol-hacks.h b/sysdeps/generic/symbol-hacks.h
index 1115e4c0a7..560116d575 100644
--- a/sysdeps/generic/symbol-hacks.h
+++ b/sysdeps/generic/symbol-hacks.h
@@ -6,6 +6,13 @@ asm ("memmove = __GI_memmove");
 asm ("memset = __GI_memset");
 asm ("memcpy = __GI_memcpy");
 
+/* clang might generate an abort call when cleanup functions (set by
+   __attribute__ ((cleanup)) calls functions not marked as nothrow.
+   We can mitigate by marking some internal functions as __THROW,
+   but it is not possible for functions that issue used-provided
+   callbacks (for instance pthread_once).  */
+asm ("abort = __GI_abort");
+
 /* Some targets do not use __stack_chk_fail_local.  In libc.so,
    redirect __stack_chk_fail to a hidden reference
    __stack_chk_fail_local, to avoid the PLT reference.
diff --git a/sysdeps/nptl/lowlevellock.h b/sysdeps/nptl/lowlevellock.h
index 1fc4936a6c..4a769b799a 100644
--- a/sysdeps/nptl/lowlevellock.h
+++ b/sysdeps/nptl/lowlevellock.h
@@ -125,9 +125,9 @@ libc_hidden_proto (__lll_lock_wait)
 #define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private)
 
 
-extern void __lll_lock_wake_private (int *futex);
+extern void __lll_lock_wake_private (int *futex) __THROW;
 libc_hidden_proto (__lll_lock_wake_private)
-extern void __lll_lock_wake (int *futex, int private);
+extern void __lll_lock_wake (int *futex, int private) __THROW;
 libc_hidden_proto (__lll_lock_wake)
 
 /* This is an expression rather than a statement even though its value is