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-rw-r--r--nptl/descr.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/nptl/descr.h b/nptl/descr.h
index 41ee56feb2..af2a6ab87a 100644
--- a/nptl/descr.h
+++ b/nptl/descr.h
@@ -36,7 +36,9 @@
 #include <tls-internal-struct.h>
 
 #ifndef TCB_ALIGNMENT
-# define TCB_ALIGNMENT	sizeof (double)
+# define TCB_ALIGNMENT 32
+#elif TCB_ALIGNMENT < 32
+# error TCB_ALIGNMENT must be at least 32
 #endif