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-rw-r--r--sysdeps/unix/sysv/linux/x86_64/sys/debugreg.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/x86_64/sys/debugreg.h b/sysdeps/unix/sysv/linux/x86_64/sys/debugreg.h
index 84a901743d..de10277e2b 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sys/debugreg.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sys/debugreg.h
@@ -54,7 +54,9 @@
 #define DR_LEN_1 (0x0)	      /* Settings for data length to trap on */
 #define DR_LEN_2 (0x4)
 #define DR_LEN_4 (0xC)
-#define DR_LEN_8 (0x8)
+#ifdef __x86_64__
+# define DR_LEN_8 (0x8)
+#endif
 
 /* The low byte to the control register determine which registers are
    enabled.  There are 4 fields of two bits.  One bit is "local", meaning