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-rw-r--r--sysdeps/x86_64/x32/_itoa.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/x86_64/x32/_itoa.h b/sysdeps/x86_64/x32/_itoa.h
index f9ec802726..0f9ed47726 100644
--- a/sysdeps/x86_64/x32/_itoa.h
+++ b/sysdeps/x86_64/x32/_itoa.h
@@ -1,3 +1,4 @@
+/* X32 uses 64-bit _itoa_word and _itoa is mapped to _itoa_word.  */
 #define _ITOA_NEEDED		0
 #define _ITOA_WORD_TYPE		unsigned long long int
 #include_next <_itoa.h>